ClearBridge Investments
OS

ClearBridge Investments’s OneStream Inc OS Stock Holding History

ClearBridge Investments’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
-613,505
Closed -$11.3M – 741
2025
Q4 		$11.3M Buy
613,505
+1,999
+0.3% +$38.1K 0.01% 467
2025
Q3 		$11.3M Buy
611,506
+62,503
+11% +$1.37M 0.01% 492
2025
Q2 		$15.5M Buy
549,003
+8,785
+2% +$219K 0.01% 436
2025
Q1 		$11.5M Buy
540,218
+214,225
+66% +$5.49M 0.01% 470
2024
Q4 		$9.3M Sell
325,993
-376,203
-54% -$11.5M 0.01% 540
2024
Q3 		$23.8M Buy
+702,196
New +$20.7M 0.02% 424

Other funds holding OS

GCL
Glazer Capital LLC New York $4.07B AUM 78.71% 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

ClearBridge Investments's OS Position: Q1 2026 in Review

ClearBridge Investments sold out of OneStream Inc (OS) in Q1 2026, closing a stake of 613,505 shares — an estimated $11.3M sold.

ClearBridge Investments first reported a position in OS in Q3 2024 and held it in 6 quarters. The position peaked at $23.8M in Q3 2024. 180 funds tracked by Wall St. Rank hold OS as of Q1 2026.

  • ClearBridge Investments reported no remaining OneStream Inc position as of Q1 2026 after selling out during the quarter.
  • ClearBridge Investments sold 613,505 OneStream Inc shares in Q1 2026, an estimated $11.3M.
  • ClearBridge Investments first reported a position in OneStream Inc in Q3 2024 and held it in 6 quarters.
  • ClearBridge Investments's OneStream Inc position peaked at $23.8M in Q3 2024.
  • 180 funds tracked by Wall St. Rank held OneStream Inc as of Q1 2026.

Based on ClearBridge Investments's 13F filing for Q1 2026, filed 13 May 2026.