Union Square Park Capital Management, LLC holds a focused book of 53 stocks worth $114.3M as of Q1 2026 (disclosed May 15, 2026, a ~45-day 13F lag). This quarter they opened Nebius Group NV and trimmed Ridenow Group Inc. Their largest long position is Ridenow Group Inc at 9% of the equity book. They also disclosed $61.4M in put options (a bearish bet) and $442K in call options (bullish), shown separately below and excluded from the equity book.
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Use Arkolith to show Union Square Park Capital Management, LLC's latest holdings, largest changes, and filing provenance.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
98% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Ridenow Group Inc COM CL B | $10.1M | 1.43M | 8.9% | ▼−9.7% Reduced · −155K sh | |
| 2 | RH COM | $9.1M | 65.0K | 8.0% | ▲+18% Added · +10K sh | |
| 3 | Peloton Interactive Inc CL A COM | $6.4M | 1.50M | 5.6% | ▲+36% Added · +400K sh | |
| 4 | Establishment Labs Hldgs Inc COM | $6.0M | 105.0K | 5.2% | ▲+17% Added · +15K sh | |
| 5 | Apartment Invt & Mgmt Co CL A | $4.6M | 1.13M | 4.0% | ▲+73% Added · +475K sh | |
| 6 | Industrial Logistics Pptys T COM SHS BEN INT | $4.3M | 762.8K | 3.8% | ▼−18% Reduced · −167K sh | |
| 7 | Compass Inc CL A | $4.2M | 575.0K | 3.7% | ▼−14% Reduced · −92K sh | |
| 8 | Lyft Inc CL A COM | $4.0M | 300.0K | 3.5% | ▲+20% Added · +50K sh | |
| 9 | Airbnb Inc COM CL A | $3.8M | 30.0K | 3.3% | —Held | |
| 10 | Sportsmans Whse Hldgs Inc COM | $3.7M | 2.60M | 3.2% | ▲+9.3% Added · +222K sh | |
| 11 | Nebius Group N.V. SHS CLASS A | $3.1M | 30.0K | 2.7% | ▲New New position | |
| 12 | Centuri Holdings Inc COM SHS | $2.9M | 100.0K | 2.6% | —Held | |
| 13 | Vertiv Holdings Co COM CL A | $2.5M | 10.0K | 2.2% | ▲New New position | |
| 14 | Broadcom Inc COM | $2.3M | 7.5K | 2.0% | ▲+114% Added · +4K sh | |
| 15 | Ishares TR US AER DEF ETF | $2.2M | 10.0K | 1.9% | ▲New New position | |
| 16 | Caesars Entertainment Inc Ne COM | $2.1M | 80.0K | 1.9% | ▼−76% Reduced · −260K sh | |
| 17 | Amazon Com Inc COM | $2.1M | 10.0K | 1.8% | ▲New New position | |
| 18 | Advanced Micro Devices Inc COM | $2.0M | 10.0K | 1.8% | —Held | |
| 19 | Enviri Corp COM | $2.0M | 100.0K | 1.7% | ▼−44% Reduced · −80K sh | |
| 20 | Lionsgate Studios Corp COM | $1.9M | 200.0K | 1.7% | ▼−33% Reduced · −100K sh | |
| 21 | Arista Networks Inc COM SHS | $1.8M | 15.0K | 1.6% | ▲+50% Added · +5K sh | |
| 22 | Datadog Inc CL A COM | $1.8M | 15.0K | 1.5% | ▲+100% Added · +8K sh | |
| 23 | Freeport McMoran Inc CL B | $1.8M | 30.0K | 1.5% | ▲New New position | |
| 24 | Micron Technology Inc COM | $1.7M | 5.0K | 1.5% | —Held | |
| 25 | Monro Inc COM | $1.6M | 100.0K | 1.4% | ▲New New position | |
| 26 | Talen Energy Corp COM | $1.6M | 5.0K | 1.4% | —Held | |
| 27 | Vistra Corp COM | $1.5M | 10.0K | 1.3% | —Held | |
| 28 | Core Scientific Inc New COM | $1.5M | 100.0K | 1.3% | ▲New New position | |
| 29 | NRG Energy Inc COM NEW | $1.5M | 10.0K | 1.3% | —Held | |
| 30 | Alphabet Inc CAP STK CL C | $1.4M | 5.0K | 1.3% | ▲New New position | |
| 31 | Constellation Energy Corp COM | $1.4M | 5.0K | 1.2% | —Held | |
| 32 | Leonardo DRS Inc COM | $1.3M | 30.0K | 1.2% | ▲New New position | |
| 33 | Apple Inc COM | $1.3M | 5.0K | 1.1% | ▲New New position | |
| 34 | L3harris Technologies Inc COM | $1.2M | 3.5K | 1.1% | ▲New New position | |
| 35 | United Airls Hldgs Inc COM | $1.2M | 12.5K | 1.0% | ▲New New position | |
| 36 | Champion Homes Inc COM | $1.1M | 15.0K | 1.0% | ▲New New position | |
| 37 | American Airlines Group Inc COM | $1.1M | 100.0K | 0.9% | ▲New New position | |
| 38 | Mohawk Inds Inc COM | $985K | 10.0K | 0.9% | ▲New New position | |
| 39 | Generac Hldgs Inc COM | $977K | 5.0K | 0.9% | ▲New New position | |
| 40 | Ondas Inc COM NEW | $904K | 100.0K | 0.8% | ▲New New position | |
| 41 | Jetblue Airways Corp COM | $884K | 200.0K | 0.8% | ▲New New position | |
| 42 | Lennar Corp CL A | $868K | 10.0K | 0.8% | ▲New New position | |
| 43 | James Hardie Inds PLC ORD SHS | $852K | 45.0K | 0.7% | ▲New New position | |
| 44 | Builders Firstsource Inc COM | $823K | 10.0K | 0.7% | ▲New New position | |
| 45 | Green Brick Partners Inc COM | $645K | 10.0K | 0.6% | ▲New New position | |
| 46 | Nlight Inc COM | $570K | 10.0K | 0.5% | ▲New New position | |
| 47 | Hovnanian Enterprises Inc CL A NEW | $555K | 5.0K | 0.5% | ▲New New position | |
| 48 | Lightpath Technologies Inc COM CL A | $502K | 50.0K | 0.4% | ▲New New position | |
| 49 | Oportun Finl Corp COM | $461K | 100.0K | 0.4% | ▲New New position | |
| 50 | Aerovironment Inc COM | $458K | 2.5K | 0.4% | ▲New New position |
Put / call positions from the 13F — totals include every disclosed option leg
| Type | Underlying | Notional value | Underlying shares |
|---|---|---|---|
| PUT · bearish | SS SPDR S&P 500 ETF TRUST-USSPY | $22.8M | 35K |
| PUT · bearish | ISHR IBX USD HIYLD CB ETF-UIHYG | $15.9M | 200K |
| PUT · bearish | INVESCO QQQ TRUST SERIES 1QQQ | $11.5M | 20K |
| PUT · bearish | ISHARES RUSSELL 2000 ETFIWM | $11.2M | 45K |
| CALL · bullish | JETBLUE AIRWAYS CORPJBLU | $442K | 100K |
13F filers disclose option positions at the market value of the underlying the contracts reference, not the premium paid. A put is a bearish bet (it gains if the stock falls); a call is bullish. “Underlying shares” is the share count the contracts control, not a share holding. These legs are excluded from the equity book, weighting, concentration and sector figures above.
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q1 2026 | Mar 31, 2026 | May 15, 2026 | 58 | $176.1M | 13F-HR/A |
| Q4 2025 | Dec 31, 2025 | Feb 17, 2026 | 49 | $208.0M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 14, 2025 | 56 | $281.1M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.