AI
OS

Atria Investments’s OneStream Inc OS Stock Holding History

Atria 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
-17,949
Closed -$330K – 2176
2025
Q4 		$330K Sell
17,949
-1,746
-9% -$33.3K ﹤0.01% 1685
2025
Q3 		$363K Sell
19,695
-1,368
-6% -$30K ﹤0.01% 1609
2025
Q2 		$596K Buy
21,063
+6,687
+47% +$167K 0.01% 1322
2025
Q1 		$307K Buy
14,376
+2,443
+20% +$62.7K ﹤0.01% 1618
2024
Q4 		$340K Sell
11,933
-600
-5% -$18.4K ﹤0.01% 1534
2024
Q3 		$425K Buy
+12,533
New +$369K 0.01% 1408

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

Atria Investments's OS Position: Q1 2026 in Review

Atria Investments sold out of OneStream Inc (OS) in Q1 2026, closing a stake of 17,949 shares — an estimated $330K sold.

Atria Investments first reported a position in OS in Q3 2024 and held it in 6 quarters. The position peaked at $596K in Q2 2025. 180 funds tracked by Wall St. Rank hold OS as of Q1 2026.

  • Atria Investments reported no remaining OneStream Inc position as of Q1 2026 after selling out during the quarter.
  • Atria Investments sold 17,949 OneStream Inc shares in Q1 2026, an estimated $330K.
  • Atria Investments first reported a position in OneStream Inc in Q3 2024 and held it in 6 quarters.
  • Atria Investments's OneStream Inc position peaked at $596K in Q2 2025.
  • 180 funds tracked by Wall St. Rank held OneStream Inc as of Q1 2026.

Based on Atria Investments's 13F filing for Q1 2026, filed 5 May 2026.