Three companies met our criteria from the four 10-K annual reports filed with the SEC on 9 October 2026. To qualify, a company must have filed an annual 10-K report on the target date and have a prior-year 10-K available for a direct year-over-year comparison. A prior-year filing was not available for alpha-En Corp, so it is excluded from the ranking.
SEC What Changed Methodology
Each company is scored on how similar its current annual filing text is to the prior year. Scores run from 0 to 1 — a score of 1 means the language is essentially unchanged; a lower score means more has changed. We flag three sections that carry the most disclosure signal: Business, Risk Factors, and MD&A. Recent research suggests that lower scores indicate that a company has made significant changes to their filings, these changes are often buried in the filings. If a company was to report positive news, they would likely do so in the form of a press release or statement on their website. The large changers have often underperformed in the market, while the stable-language filers have earned positive abnormal returns.
Key Takeaways
- HARBOR DIVERSIFIED, INC. (High) — Harbor is now primarily a cash-and-investments story, and the biggest risk is losing its Investment Company Act exemption.
- GHST World Inc. (High) — GHST World is effectively a cash-starved shell looking for a deal, not an operating business with a stable standalone plan.
- MICRON TECHNOLOGY INC (Medium) — Micron is highlighting bigger FX risk while also showing that more of its revenue is now tied to enforceable, security-backed customer contracts.
Ranking Table
| Rank | Company | CIK | Full Filing Similarity | Business Similarity | Risk Factors Similarity | MD&A Similarity | Most Changed Section | Assessment |
|---|---|---|---|---|---|---|---|---|
| 1 | HARBOR DIVERSIFIED, INC. | 899394 | 0.946 | 0.996 | 0.841 | 0.997 | Risk Factors | high |
| 2 | GHST World Inc. | 1121795 | 0.997 | 0.965 | 0.988 | 0.987 | Business | high |
| 3 | MICRON TECHNOLOGY INC | 723125 | 0.686 | 0.996 | 0.881 | 0.99 | Risk Factors | medium |
HARBOR DIVERSIFIED, INC.
| Rank | 1 |
|---|---|
| Lowest similarity section | Risk Factors |
| Assessment | high |
| SEC filings | 2026 10-K HTML/iXBRL (SEC page, raw text) | 2026 10-K HTML/iXBRL (SEC page, raw text) |
Harbor’s new filing puts much more emphasis on post-disposition balance sheet risk and the need to stay clear of Investment Company Act registration. It also highlights that the company is now focused on investing liquid assets, preserving cash, and pursuing strategic alternatives rather than running an operating aviation business. For investors, the key message is that Harbor’s future now depends heavily on capital allocation and regulatory compliance.
Main Changes
- The risk factors now explicitly warn that Harbor must continue to satisfy an exemption from the Investment Company Act and manage its asset mix to stay within that exemption.
- New language says Harbor could be deemed an investment company required to register, which would bring significant regulatory requirements and could materially affect operations, capital structure, and flexibility.
- The filing adds a risk that Harbor must invest its liquid assets while preserving capital and liquidity and still generate enough return to cover ongoing corporate expenses.
- The company also adds risk around strategic alternatives and investment opportunities, including acquisitions, capital allocation transactions, and the possibility that it may not find or complete them successfully.
Watch Items
- This signals a more asset-management-like posture after the aviation exit, which changes how investors should think about the business model and risk profile.
- The investment company warning is material because a failed exemption could force a major regulatory reset and constrain capital deployment.
- The emphasis on liquidity preservation suggests the company is still balancing cash management against overhead, with limited margin for error.
Important Filing Changes
The DGCL also prohibits limitations on director liability under Section 174 of the DGCL, which relates to certain unlawful dividend declarations and stock repurchases. We maintain insurance that insures our directors and officers against certain losses and which insures us against our obligations to indemnify the directors and officers. We have also entered into indemnification agreements with our directors and executive officer, the form of which has been filed as Exhibit 10.1 to the Annual Report.
RISK FACTORS Our short- and long-term success is subject to numerous risks and uncertainties, many of which involve factors that are difficult to predict or beyond our control. As a result, investing in Harbor’s common stock involves substantial risk.
10-K 001-34584 3.3 July 10, 2020 4.1* Description of Capital Stock of Harbor Diversified, Inc. 4.2 Specimen Stock Certificate for Common Stock of Harbor Diversified, Inc. 10-K 001-34584 4.2 March 30, 2022 10.1# Form of Indemnification Agreement.
RISK FACTORS Our short- and long-term success is subject to numerous risks and uncertainties, many of which involve factors that are difficult to predict or beyond our control. As a result, investing in Harbor’s common stock involves substantial risk. Before deciding to purchase or sell Harbor’s common stock, stockholders should carefully consider the risks and uncertainties described below, in addition to the other information contained in or incorporated by reference into this Annual Report, as well as the other information we file with the SEC from time to time.
BUSINESS General Harbor is a non-operating holding company that is the parent of a consolidated group of subsidiaries, including AWAC Aviation, Inc. (“AWAC”), which, until January 9, 2026, was the sole member of Air Wisconsin Airlines LLC (“Air Wisconsin”), which is an air carrier. Harbor is also the direct parent of three other subsidiaries: (1) Lotus Aviation Leasing, LLC (“Lotus”), which leased flight equipment to Air Wisconsin, (2) Air Wisconsin Funding LLC (“AWF”), which provided flight equipment financing to Air Wisconsin, and (3) Harbor Therapeutics, Inc. (“Therapeutics”), which is a non-operating entity with no material assets.
BUSINESS General Harbor is a non-operating holding company that is the parent of a consolidated group of subsidiaries, including AWAC Aviation, Inc. (“AWAC”), which, until January 9, 2026, was the sole member of Air Wisconsin Airlines LLC (“Air Wisconsin”), which operated as an air carrier. Harbor is also the direct parent of three other subsidiaries: (1) Lotus Aviation Leasing, LLC (“Lotus”), which leased flight equipment to Air Wisconsin, (2) Air Wisconsin Funding LLC (“AWF”), which provided flight equipment financing to Air Wisconsin, and (3) Harbor Therapeutics, Inc. (“Therapeutics”), which is a non-operating entity with no material assets.
GHST World Inc.
| Rank | 2 |
|---|---|
| Lowest similarity section | Business |
| Assessment | high |
| SEC filings | 2026 10-K HTML/iXBRL (SEC page, raw text) | 2025 10-K HTML/iXBRL (SEC page, raw text) |
GHST World has moved away from its earlier solar and product-development narrative and is now openly focused on finding a business combination or other strategic transaction with an operating company. The filing also says the company is trying to extract value from prior R&D while keeping optionality in clean energy and sports technology. Liquidity remains extremely tight, with only about $861 in cash and a continued going-concern warning.
Main Changes
- The company replaced references to a prior plan around "construction of solar plants" and the "Smart Shin Guard" with a new focus on "seeking a potential business combination or strategic transaction with an operating entity with an existing revenue-generating business."
- Management now says it is trying to "realize value from our prior research and development activities" and may pursue future efforts in the "clean energy and sports technology sectors," rather than describing a specific operating rollout.
- The risk discussion was tightened to say capital shortages have already "prevented us from furthering our prior business plans and business development efforts or generating material revenue therefrom," and now highlights the challenge of identifying, negotiating, and closing a transaction.
- Liquidity language worsened: cash fell to about "$861" from roughly "$15,900," and the company says it needs at least "$200,000" over the next 12 months, versus "$250,000" in the prior filing.
Watch Items
- The filing signals a strategic reset toward a reverse-merger-style or acquisition-led path, which could materially change the company’s business model and risk profile.
- The near-zero cash balance and continued going-concern warning underscore a high dependence on external financing or a transaction to remain viable.
- Management’s emphasis on monetizing prior R&D suggests limited confidence in the original operating plan and a search for any path to value creation.
Important Filing Changes
Cautionary Note Regarding Forward Looking Statements This Annual Report on Form 10-K (this “Report”) contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements regarding our new business plan and prospective operations and arrangements involving the construction of solar plants and the sale of electricity and potential transactions and potential future revenue and other benefits of such plan and operations, the development of the Smart Shin Guard and plans to further develop and pursue a market for and begin commercializing the product, future sources of revenue and anticipated timing and efforts relating to revenue-generating activities, our exploration of potential new business opportunities, the implementation of our business plan and expected timelines for meeting objectives, strategic alliances, our capital raising efforts and our liquidity. Forward-looking statements can be identified by words such as “anticipates,”…
Cautionary Note Regarding Forward Looking Statements This Annual Report on Form 10-K (this “Report”) contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements regarding our business plans, exploration of potential new business opportunities including seeking a potential business combination or strategic transaction with an operating entity with an existing revenue-generating business, our efforts to realize value from our prior research and development activities and potential future efforts in the clean energy and sports technology sectors, potential future sources of revenue, and our capital raising efforts and liquidity. Forward-looking statements can be identified by words such as “anticipates,” “intends,” “plans,” “seeks,” “believes,” “estimates,” “expects” and similar references to future periods.
The results anticipated by any or all of these forward-looking statements might not occur. Important factors, uncertainties and risks that may cause actual results to differ materially from these forward-looking statements include the risks arising from our need for capital any inability to raise sufficient capital by us or our related party partner or otherwise proceed with our business plans, the potential adverse effects of United States tariffs and any retaliatory actions, interest rates, geopolitical conflicts such as those occurring in Israel and Ukraine and negative operational impacts or an economic downturn or recession which may result, which may result in delays or obstacles in or prevent us from raising capital as and when needed or at all, supply chain disruptions, shortages and delays and other potential unforeseen events which may adversely affect our ability to develop, manufacture and sell…
The results anticipated by any or all of these forward-looking statements might not occur. Important factors, uncertainties and risks that may cause actual results to differ materially from these forward-looking statements include the risks arising from our need for capital and our any inability to raise sufficient capital or otherwise proceed with our business plans which have among other consequences prevented us from furthering our prior business plans and business development efforts or generating material revenue therefrom, the potential adverse effects of geopolitical events including United States tariffs and any retaliatory actions, interest rates, geopolitical conflicts such as those occurring in the Middle East and Ukraine and negative impacts on capital raising efforts or an economic downturn or recession which may result, which may result in delays or obstacles in or prevent us from raising capital as and when needed or at all, risks and uncertainties surrounding our pursuit of the new business opportunities or strategic transactions we seek to pursue including our ability to identify, negotiate, execute a definitive agreement for, and close a business combination or other strategic transaction, and the risks disclosed in our filings with the SEC including those described in this Report under “Item 1A – Risk Factors.” We undertake no obligation to publicly update or revise any forward-looking statements, whether as the result of new information, future events or otherwise. Overview GHST World Inc. (“GHST” or the “Company”) was organized on November 12, 1999, as a Delaware corporation.
See “Cautionary Note Regarding Forward Looking Statements” and “Risk Factors” contained in the forepart of this Report for more information. Overview Our principal business focus has been seeking to exploit a patent and obtain and exploit future patents for the Smart Shin Guard. We have also added to this focus the operations of Insside, which is in the early stages of developing a clean energy business with an initial focus on wholesale electricity sales and the development of solar energy infrastructure in Italy, which will be subject to a third party accessing capital.
See “Cautionary Note Regarding Forward Looking Statements” and “Risk Factors” contained in the forepart of this Report for more information. Overview Our principal business focus has historically been seeking to exploit a patent and obtain and exploit future patents for the Smart Shin Guard. We also later added to this focus the operations of Insside, which has pursued a clean energy business in Italy.
MICRON TECHNOLOGY INC
| Rank | 3 |
|---|---|
| Lowest similarity section | Risk Factors |
| Assessment | medium |
| SEC filings | 2026 10-K HTML/iXBRL (SEC page, raw text) | 2025 10-K HTML/iXBRL (SEC page, raw text) |
Micron added a new risk factor around foreign currency swings and quantified a much larger potential loss from a 10% adverse move in exchange rates. It also described a more structured customer contracting model, including take-or-pay agreements with volume commitments and financial security. Together, the changes point to greater operating complexity but also more formalized demand visibility.
Main Changes
- Added a new risk factor saying foreign currency moves could materially hurt results, noting that a 10% adverse move versus the U.S. dollar could cause about $2.91 billion of losses as of September 3, 2026, versus $572 million a year earlier.
- Expanded the currency hedge discussion to say Micron uses rolling forward contracts for primary exposures, debt investments, and some capital expenditures, but hedges may not fully offset exchange-rate volatility.
- In Business/MD&A, Micron now says some customer contracts are short-term and that strategic customer agreements are take-or-pay deals with binding volume commitments, fixed or banded pricing, and cash deposits or letters of credit.
- The customer section also shifts from saying customers are generally reluctant to sign long-term fixed-price contracts to emphasizing more structured, enforceable multi-year agreements.
Watch Items
- Foreign exchange exposure is now framed as a larger earnings and cash-flow risk, which matters because Micron has meaningful non-U.S. cost and asset exposure.
- Take-or-pay and security-backed customer contracts suggest better revenue visibility, but they also imply more dependence on a smaller set of strategic customers and contract discipline.
- The much larger hypothetical FX loss estimate may signal a bigger balance-sheet or operating footprint outside the dollar zone.
Important Filing Changes
The substantial majority of our sales are transacted in the U.S. dollar; however, significant amounts of our operating expenses and capital expenditures, and certain assets and liabilities, are incurred in or exposed to other currencies, primarily the Canadian dollar, Chinese yuan, euro, Indian rupee, Japanese yen, Malaysian ringgit, New Taiwan dollar, and Singapore dollar. We have established currency risk management programs for our monetary assets and liabilities, investments in debt instruments, and forecasted future cash flows denominated in foreign currencies to hedge against fluctuations in the fair value and volatility of future cash flows caused by changes in currency exchange rates. We generally utilize currency forward contracts in these hedging programs, which reduce, but do not always entirely eliminate, the impact of currency exchange rate movements.
We do not use derivative financial instruments for trading or speculative purposes. Based on monetary assets and liabilities and investments in debt instruments denominated in foreign currencies, we estimate that a hypothetical 10% adverse change in exchange rates versus the U.S. dollar would result in losses of approximately $2.91 billion as of September 3, 2026, and $572 million as of August 28, 2025. We hedge our exposure to changes in currency exchange rates by utilizing a rolling hedge strategy for our primary currency exposures with currency forward contracts that generally mature within one year.
We do not use derivative financial instruments for trading or speculative purposes. We hedge our exposure to changes in currency exchange rates by utilizing a rolling hedge strategy for our primary currency exposures with currency forward contracts that generally mature within three months. The effectiveness of our hedges is dependent, among other factors, upon our ability to accurately measure exposures on a timely basis.
Based on monetary assets and liabilities and investments in debt instruments denominated in foreign currencies, we estimate that a hypothetical 10% adverse change in exchange rates versus the U.S. dollar would result in losses of approximately $2.91 billion as of September 3, 2026, and $572 million as of August 28, 2025. We hedge our exposure to changes in currency exchange rates by utilizing a rolling hedge strategy for our primary currency exposures with currency forward contracts that generally mature within one year. The effectiveness of our hedges is dependent, among other factors, upon our ability to accurately measure exposures on a timely basis.
Exhibits and Financial Statement Schedule 104 Item 16. Abbreviations, acronyms, or terms that are commonly used or found in multiple locations throughout this report and include the following: Term Definition Term Definition 2024 Term Loan A Senior Term Loan A due October 2024, repaid January 2024 2035 B Notes 6.050% Senior Notes due November 2035 2025 Term Loan A Senior Term Loan A due November 2025, repaid May 2024 2041 Notes 3.366% Senior Notes due November 2041 2026 Notes 4.975% Senior Notes due February 2026, repaid February 2025 2051 Notes 3.477% Senior Notes due November 2051 2026 Term Loan A Senior Term Loan A due November 2026, repaid January 2025 AI Artificial intelligence 2027 Notes 4.185% Senior Notes due February 2027, repaid May 2025 CAC China’s Cyberspace Administration 2027 Term Loan A Senior Term Loan A due November 2027, repaid…
Exhibits and Financial Statement Schedule 98 Item 16. Abbreviations, acronyms, or terms that are commonly used or found in multiple locations throughout this report and include the following: Term Definition Term Definition 2028 Notes 5.375% Senior Notes due April 2028, repaid October 2025 AI Artificial intelligence 2029 A Notes 5.327% Senior Notes due February 2029, repaid February 2026 CAC China’s Cyberspace Administration 2029 B Notes 6.750% Senior Notes due November 2029, repaid October 2025 CHIPS Act U.S. CHIPS and Science Act of 2022 2029 Term Loan A Senior Term Loan A due January 2029, repaid October 2025 DDR Double data rate DRAM 2030 Notes 4.663% Senior Notes due February 2030, repaid February 2026 EBITDA Earnings before interest, taxes, depreciation, and amortization 2031 Notes 5.300% Senior Notes due January 2031, repaid July 2026 EUV Extreme ultraviolet lithography 2032 Green Bonds 2.703% Senior Notes due April 2032 HBM High-bandwidth memory 2032 Notes 5.650% Senior Notes due November 2032 Micron Micron Technology, Inc. (Parent Company) 2033 A Notes 5.875% Senior Notes due February 2033 OEM Original equipment manufacturer 2033 B Notes 5.875% Senior Notes due September 2033 R&D Research and development 2035 A Notes 5.800% Senior Notes due January 2035 Revolving Credit Facility $2.0 billion Revolving Credit Facility due March 2030 2035 B Notes 6.050% Senior Notes due November 2035 SOFR Secured Overnight Financing Rate 2041 Notes 3.366% Senior Notes due November 2041 SSD Solid state drive 2051 Notes 3.477% Senior Notes due November 2051 Micron®, any associated logos, and all other Micron trademarks are the property of Micron.
Why SEC Filing Changes Matter
Research by Cohen et al. (Lazy Prices, 2020) — using the complete history of SEC filings from 1995 to 2014 — shows that when firms make active changes to their annual disclosures, those changes convey an important signal about future operations and returns. A portfolio that shorted "changers" and bought "non-changers" earned over 22% per year in annual alpha historically. Changes to the Risk Factors section, Business description, and language referring to the executive team were especially informative. Critically, these returns accrued gradually as information was later revealed through news and earnings — not at the time of filing — suggesting many investors remain inattentive to these simple, public signals. This snapshot is a starting point for deeper investigation, not a buy or sell recommendation.
For more like this, see the full SEC What Changed archive, browse more equity research reports, or subscribe to Quantitative Research Notes for new filing-change alerts as soon as they publish.

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