SPYM Short Interest (August 31, 2026 Update)
Short interest for SPYM was 21.3M as of August 31, 2026, +0.2% from the prior report.
This page tracks SPYM short interest over time, including historical values, changes between reports, and days to cover.
State Street SPDR Portfolio S& | SPYM | ARCA | Latest report: August 31, 2026
At the latest settlement date of August 31, 2026, State Street SPDR Portfolio S& (SPYM) showed reported short interest of 21,263,507 shares. That compared with 21,213,442 shares in the prior report, a change of 50.1K shares, or +0.2%. The latest reported days to cover was 2.68, based on average daily volume of 7.9M.
The historical data currently tracked for SPYM includes 32 reported entries from September 13, 2024 to August 31, 2026. Over that span, reported short interest has ranged from 1.6K to 43.1M shares.
Extreme edge-case readings may reflect unusually low reported average volume.
| Settlement Date | Short Interest | Prior Short Interest | Change Shares | Change % | Average Daily Volume | Days to Cover |
|---|---|---|---|---|---|---|
| August 31, 2026 | 21,263,507 | 21,213,442 | 50.1K | +0.2% | 7.9M | 2.68 |
| August 14, 2026 | 21,213,442 | 20,239,028 | 974.4K | +4.8% | 9.5M | 2.24 |
| July 31, 2026 | 20,239,028 | 20,007,921 | 231.1K | +1.2% | 9.6M | 2.11 |
| July 15, 2026 | 20,007,921 | 18,380,394 | 1.6M | +8.8% | 13.1M | 1.53 |
| June 30, 2026 | 18,380,394 | 13,089,295 | 5.3M | +40.4% | 13.6M | 1.35 |
| June 15, 2026 | 13,089,295 | 11,105,301 | 2.0M | +17.9% | 20.5M | 1 |
| May 29, 2026 | 11,105,301 | 7,663,119 | 3.4M | +44.9% | 10.7M | 1.04 |
| May 15, 2026 | 7,663,119 | 8,133,973 | -470.9K | -5.8% | 7.2M | 1.06 |
| April 30, 2026 | 8,133,973 | 6,713,539 | 1.4M | +21.2% | 8.8M | 1 |
| April 15, 2026 | 6,713,539 | 8,325,187 | -1.6M | -19.4% | 14.8M | 1 |
| March 31, 2026 | 8,325,187 | 8,367,645 | -42.5K | -0.5% | 24.7M | 1 |
| March 13, 2026 | 8,367,645 | 6,697,053 | 1.7M | +24.9% | 25.0M | 1 |
| February 27, 2026 | 6,697,053 | 7,230,413 | -533.4K | -7.4% | 12.6M | 1 |
| February 13, 2026 | 7,230,413 | 6,823,889 | 406.5K | +6.0% | 12.2M | 1 |
| January 30, 2026 | 6,823,889 | 11,502,759 | -4.7M | -40.7% | 9.5M | 1 |
| January 15, 2026 | 11,502,759 | 37,359,911 | -25.9M | -69.2% | 11.7M | 1 |
| December 31, 2025 | 37,359,911 | 36,684,512 | 675.4K | +1.8% | 11.6M | 3.21 |
| December 15, 2025 | 36,684,512 | 43,057,290 | -6.4M | -14.8% | 11.8M | 3.1 |
| November 28, 2025 | 43,057,290 | 29,391,887 | 13.7M | +46.5% | 11.8M | 3.66 |
| November 14, 2025 | 29,391,887 | 29,225,333 | 166.6K | +0.6% | 7.1M | 4.16 |
| October 31, 2025 | 29,225,333 | 29,578,155 | -352.8K | -1.2% | 10.0M | 2.93 |
| February 14, 2025 | 2,193 | 1,976 | 217 | +11.0% | 2.8K | 1 |
| January 31, 2025 | 1,976 | 5,388 | -3.4K | -63.3% | 3.5K | 1 |
| January 15, 2025 | 5,388 | 1,620 | 3.8K | +232.6% | 2.4K | 2.22 |
| December 31, 2024 | 1,620 | 1,914 | -294 | -15.4% | 5.0K | 1 |
| December 13, 2024 | 1,914 | 2,874 | -960 | -33.4% | 2.1K | 1 |
| November 29, 2024 | 2,874 | 1,640 | 1.2K | +75.2% | 2.4K | 1.19 |
| November 15, 2024 | 1,640 | 1,604 | 36 | +2.2% | 1.7K | 1 |
| October 31, 2024 | 1,604 | 25,078 | -23.5K | -93.6% | 1.3K | 1.26 |
| October 15, 2024 | 25,078 | 10,654 | 14.4K | +135.4% | 4.0K | 6.34 |
| September 30, 2024 | 10,654 | 6,616 | 4.0K | +61.0% | 2.4K | 4.5 |
| September 13, 2024 | 6,616 | 0 | 6.6K | +100.0% | 1.6K | 4.04 |