Millennium Management
OS

Millennium Management’s OneStream Inc OS Stock Holding History

Millennium 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
2025
Q4 		– Sell
-204,300
Closed -$3.77M – 6567
2025
Q3 		$3.77M Buy
+204,300
New +$4.48M ﹤0.01% 3429

Other funds holding OS

GCL
Glazer Capital LLC New York $4.71B AUM 81.93% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Temasek Holdings
Temasek Holdings Singapore $30.5B AUM 13.98% 1-Year Est. Return
Fidelity International
Fidelity International Hamilton, Bermuda $129B AUM 30.83% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
AA
AQR Arbitrage Greenwich, Connecticut $6.09B AUM 27.01% 1-Year Est. Return
NAM
Nexpoint Asset Management Dallas, Texas $1.49B AUM 61.08% 1-Year Est. Return
OCAI
O'Connor Alternative Investments New York $1.17B AUM
PAMP
Polar Asset Management Partners Toronto, Ontario, Canada $5.01B AUM 35.27% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Millennium Management's OS Position: Q1 2026 in Review

Millennium Management increased its OneStream Inc (OS) stake by 636% in Q1 2026, buying an estimated $50.1M and bringing the position to 2,471,107 shares worth $59.3M. The position accounts for 0.02% of the portfolio, ranked #724.

Millennium Management first reported a position in OS in Q3 2024 and has held it in 7 quarters since. 180 funds tracked by Wall St. Rank hold OS as of Q1 2026.

  • Millennium Management held 2,471,107 shares of OneStream Inc worth $59.3M as of Q1 2026.
  • Millennium Management bought 2,135,526 OneStream Inc shares in Q1 2026, an estimated $50.1M.
  • OneStream Inc made up 0.02% of Millennium Management's portfolio in Q1 2026, its #724 holding.
  • Millennium Management first reported a position in OneStream Inc in Q3 2024 and has held it in 7 quarters since.
  • 180 funds tracked by Wall St. Rank held OneStream Inc as of Q1 2026.

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