DFCM
OS

Dark Forest Capital Management’s OneStream Inc OS Stock Holding History

Dark Forest Capital Management’s Portfolio OS Stock Details OS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-55,662
Closed -$1.02M – 1200
2025
Q4 		$1.02M Sell
55,662
-92,090
-62% -$1.76M 0.05% 641
2025
Q3 		$2.72M Buy
+147,752
New +$3.24M 0.1% 342
2025
Q2 		– Sell
-59,982
Closed -$1.28M – 1568
2025
Q1 		$1.28M Buy
+59,982
New +$1.54M 0.06% 569

Other funds holding OS

GCL
Glazer Capital LLC New York $4.71B AUM 81.93% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Temasek Holdings
Temasek Holdings Singapore $37.3B AUM 12.6% 1-Year Est. Return
Fidelity International
Fidelity International Hamilton, Bermuda $139B AUM 29.06% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AA
AQR Arbitrage Greenwich, Connecticut $7.02B AUM 31.58% 1-Year Est. Return
NAM
Nexpoint Asset Management Dallas, Texas $1.5B AUM 83.46% 1-Year Est. Return
OCAI
O'Connor Alternative Investments New York $1.37B AUM
PAMP
Polar Asset Management Partners Toronto, Ontario, Canada $6.07B AUM 34.81% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Dark Forest Capital Management's OS Position: Q1 2026 in Review

Dark Forest Capital Management sold out of OneStream Inc (OS) in Q1 2026, closing a stake of 55,662 shares — an estimated $1.02M sold.

Dark Forest Capital Management first reported a position in OS in Q1 2025 and held it in 3 quarters. The position peaked at $2.72M in Q3 2025. 180 funds tracked by Wall St. Rank hold OS as of Q1 2026.

  • Dark Forest Capital Management reported no remaining OneStream Inc position as of Q1 2026 after selling out during the quarter.
  • Dark Forest Capital Management sold 55,662 OneStream Inc shares in Q1 2026, an estimated $1.02M.
  • Dark Forest Capital Management first reported a position in OneStream Inc in Q1 2025 and held it in 3 quarters.
  • Dark Forest Capital Management's OneStream Inc position peaked at $2.72M in Q3 2025.
  • 180 funds tracked by Wall St. Rank held OneStream Inc as of Q1 2026.

Based on Dark Forest Capital Management's 13F filing for Q1 2026, filed 15 May 2026.