SPYM Short Interest (May 29, 2026 Update)
Short interest for SPYM was 11.1M as of May 29, 2026, +44.9% 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: May 29, 2026
At the latest settlement date of May 29, 2026, State Street SPDR Portfolio S& (SPYM) showed reported short interest of 11,105,301 shares. That compared with 7,663,119 shares in the prior report, a change of 3.4M shares, or +44.9%. The latest reported days to cover was 1.04, based on average daily volume of 10.7M.
The historical data currently tracked for SPYM includes 26 reported entries from September 13, 2024 to May 29, 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 |
|---|---|---|---|---|---|---|
| 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 |