Extra Space Storage Inc.
EXR Real Estate · REIT - IndustrialNot yet scored
Filing.fyi has not computed forensic scores for EXR yet. Scores appear after the company's next data refresh.
What the filing actually says.
The business model is clear from the filings. Extra Space owns, operates and manages self-storage stores and earns revenue from three sources: property rental, tenant reinsurance through a wholly-owned subsidiary, and management fees on stores it runs for others. The 10-Q shows 2,428 operating stores, of which 2,008 are wholly-owned, plus 1,916 third-party managed stores, for 4,344 stores owned and/or managed. Growth is partly acquisition-led, and the 10-K says the company buys Certificate of Occupancy stores even though these dilute earnings during a two-to-four year lease-up period. The bridge lending program, with bridge loans receivable of $1.5 billion at December 31, 2025, is a second balance-sheet exposure that the filing ties to future acquisitions and management growth. Readers may want to examine how that loan book performs in the full financial statements, which are not in this dataset. The risk factors name interest rates, credit availability, tariffs, cyberattacks, natural disasters and changes to tax law, and REIT status depends on distributing at least 90% of REIT taxable income. The filings also differ on footprint, listing 43 states and Washington, D.C. in the 10-K and 42 states and Washington, D.C. in the 10-Q. No Beneish M-Score, Piotroski F-Score, Altman Z-Score or Fog Index is on file for this filing, so this synthesis assigns no value or zone to any of them, and no manipulation screen can be read here. The annual revenue and operating income series also need reconciliation before any multi-year trend is drawn from them.
Catalyst.According to the first-quarter 2026 10-Q MD&A, total revenues rose 4.4% to $856.0 million from $820.0 million a year earlier. Property rental revenue grew 4.1% to $733.2 million, which management attributes to acquisitions completed in 2025 and early 2026 (an increase of $22.7 million) and to an $11.4 million improvement at same-store properties. Tenant reinsurance revenue rose 5.2% to $89.1 million, and management fees and other income rose 9.0% to $33.7 million, helped by 1,916 third-party managed stores versus 1,675 a year earlier. During 2025 the company acquired 76 wholly-owned stores and disposed of 37.
Hidden risk.The most important tension is that the annual XBRL figures in this dataset do not reconcile with the filings. The dataset lists 2025 revenues of $129.48 million and 2025 operating income of $1.41 billion, so operating income exceeds revenue by more than ten times, which is internally inconsistent. The 10-Q alone reports $856.0 million of total revenues for the first quarter of 2026. Readers may want to check the source tags before relying on the annual series. Separately, the 10-K flags joint-venture risk: the company lacks sole decision-making authority over its joint-venture investments, and joint-venture store count fell from 439 to 408 over the year.
What traders are betting.
The metric
Shares that traders have borrowed and sold, betting the price will fall, and not yet bought back. Brokers report the total to FINRA twice a month. Days to cover divides it by the shares that change hands on a typical day.
- Shares sold short
- 5.5M
- Change since Aug 31
- +23.0%
- Days to cover
- 3.6
What it tells us
Few traders are betting against EXR. Levels this low are common for large, widely held companies.
Short sellers added to their bets: shares sold short grew 23.0% since the Aug 31 report.
At normal trading volume, short sellers would need about 3.6 days to buy back every borrowed share.
How investors use it
- Squeeze watching. Some aggressive traders seek out heavily shorted stocks, betting that good news will force short sellers to buy back shares and push the price higher.
- Hedging. Funds short one company to offset risk in another, often owning a stronger business and shorting a weaker one in the same industry.
- Timing. Chart-based traders pair rising short interest with price patterns, such as a break below a level where buyers used to step in, to decide when to enter or exit.
- Warning sign. Some owners treat a sharp rise in short interest as a red flag and respond by tightening stop-loss orders or holding smaller positions.
Annual report, quarterly reports & proxy statement
The annual report (10-K), quarterly reports (10-Q), proxy statement (DEF 14A) and current reports (8-K) Extra Space Storage filed in the last 12 months, each linked to the original document on SEC EDGAR.
- Aug 24, 20268-KCurrent reportItem 5.02: Departure/appointment of officers or directors; Item 7.01: Regulation FD disclosure (investor materials)EDGAR →★ Curriculum-relevant
- Jul 31, 202610-QQuarterly report0EDGAR →
- Jul 28, 20268-KCurrent reportItem 2.02: Results of operations (earnings)0EDGAR →
- May 1, 202610-QQuarterly report (2026-03-31)Period: 2026-03-310EDGAR →
- Apr 28, 20268-KCurrent report (2026-04-28)Item 2.02: Results of operations (earnings)0EDGAR →
- Apr 1, 2026DEF 14AProxy statement (2025-12-31)0EDGAR →
- Feb 20, 202610-KAnnual report (2025-12-31)Period: 2025-12-310EDGAR →
- Feb 19, 20268-KCurrent report (2026-02-19)Item 2.02: Results of operations (earnings)0EDGAR →
- Jan 5, 20268-KCurrent report (2026-01-05)Item 5.02: Departure/appointment of officers or directors; Item 7.01: Regulation FD disclosure (investor materials)0EDGAR →
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