PROSH ULTRAPRO SHORT S&P 500 (SPXU) Institutional Ownership Changes & 13F Activity
PROSH ULTRAPRO SHORT S&P 500 (SPXU). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Imc-Chicago, Llc, Revere Asset Management, Inc, Hrt Financial Lp, Jane Street Group, Llc, and Susquehanna International Group, Llp.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Newedge Advisors, Llc | Buy | +5,805 | — | 5,805 | $5.80K | Q1 2026 | May 18, 2026 |
| Susquehanna International Group, Llp | Buy | +66,164 | +113.6% | 124,392 | $7.06M | Q1 2026 | May 15, 2026 |
| Xtx Topco Ltd | Buy | +20,195 | — | 20,195 | $1.15M | Q1 2026 | May 15, 2026 |
| Tower Research Capital Llc (Trc) | Buy | +6,718 | +17.3% | 45,660 | $2.59M | Q1 2026 | May 15, 2026 |
| Cerity Partners Llc | Buy | +5,300 | — | 5,300 | $300.72K | Q1 2026 | May 15, 2026 |
| Two Sigma Securities, Llc | Sell | -5,160 | -41.0% | 7,421 | $421.07K | Q1 2026 | May 15, 2026 |
| Millennium Management Llc | Buy | +5,000 | — | 5,000 | $283.70K | Q1 2026 | May 15, 2026 |
| Efg International Ag | Buy | +4,750 | — | 4,750 | $269.51K | Q1 2026 | May 15, 2026 |
| Focus Partners Wealth | Buy | +4,697 | — | 4,697 | $266.55K | Q1 2026 | May 15, 2026 |
| Optiver Holding B.V. | Buy | +2,502 | — | 2,502 | $141.96K | Q1 2026 | May 15, 2026 |
| Morgan Stanley | Buy | +2,000 | +25000.0% | 2,008 | $113.99K | Q1 2026 | May 15, 2026 |
| Mai Capital Management | Buy | +221 | — | 221 | $12.54K | Q1 2026 | May 15, 2026 |
| Hrt Financial Lp | Buy | +115,916 | — | 115,916 | $6.58M | Q1 2026 | May 14, 2026 |
| Jump Financial, Llc | Buy | +48,671 | — | 48,671 | $2.76M | Q1 2026 | May 14, 2026 |
| Simplex Trading, Llc | Buy | +8,454 | +23.1% | 45,074 | $2.56M | Q1 2026 | May 14, 2026 |
| Stonex Group Inc. | Buy | +5,793 | — | 5,793 | $328.69K | Q1 2026 | May 14, 2026 |
| Group One Trading Llc | Buy | +6,424 | — | 6,424 | $364.50K | Q1 2026 | May 13, 2026 |
| Drw Securities, Llc | Buy | +6,189 | — | 6,189 | $351.16K | Q1 2026 | May 13, 2026 |
| Jane Street Group, Llc | Buy | +69,743 | +247.1% | 97,969 | $5.56M | Q1 2026 | May 12, 2026 |
| Belvedere Trading Llc | Buy | +29,411 | — | 29,411 | $1.67M | Q1 2026 | May 12, 2026 |
| Strategic Wealth Partners, Ltd. | Buy | +1,786 | — | 1,786 | $101.32K | Q1 2026 | May 12, 2026 |
| Td Waterhouse Canada Inc. | Buy | +225 | +36.0% | 850 | $47.12K | Q1 2026 | May 12, 2026 |
| Mcf Advisors Llc | Buy | +1 | — | 1 | $57.00 | Q1 2026 | May 11, 2026 |
| Northwestern Mutual Wealth Management Co | Sell | -38,641 | -99.6% | 154 | $8.74K | Q1 2026 | May 07, 2026 |
| Parallel Advisors, Llc | Buy | +2 | +0.5% | 430 | $24.41K | Q1 2026 | May 07, 2026 |
| Revere Asset Management, Inc | Buy | +173,278 | — | 173,278 | $9.83M | Q1 2026 | May 06, 2026 |
| Imc-Chicago, Llc | Buy | +316,218 | — | 316,218 | $17.94M | Q1 2026 | May 05, 2026 |
| Ubs Group Ag | Buy | +16,009 | +97.3% | 32,458 | $1.84M | Q1 2026 | May 05, 2026 |
| Sbi Securities Co., Ltd. | Sell | -38 | -6.8% | 518 | $29.39K | Q1 2026 | Apr 28, 2026 |
| Richards, Merrill & Peterson, Inc. | Buy | +9,000 | — | 9,000 | $510.66K | Q1 2026 | Apr 17, 2026 |
Frequently asked questions about SPXU activity
Which institutional owners are buying SPXU?
Institutional owners buying SPXU include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in SPXU activity?
"Buy" means an investor increased their reported position in SPXU compared to the prior reporting period. This reflects growing exposure to PROSH ULTRAPRO SHORT S&P 500 (SPXU) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in SPXU increasing?
Institutional interest in SPXU can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.