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OneStream, Inc.
$24.00 +0.00 (+0.00%) At close · Apr 1
Market Cap
$5.90B
Shares
247,561,251

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 182
Total Value: $2,128,590,288
Total Shares: 88,691,262
Showing 1–100 of 190 holdings by value · page 1 of 2

Institutional Ownership Trend

7 quarters

Superinvestors Holding OS

All superinvestors →
George Soros $43,925,328 Mario Gabelli $360,000 Joel Greenblatt $239,976

Holder Concentration

Across 181 13F filers · Δ vs Dec 31, 2025
Top Holder
8.5%
Sep 2024 → Mar 2026 · range 7.8% – 76.8%
−1.9 pts
Top 5
26.0%
Sep 2024 → Mar 2026 · range 26.0% – 86.0%
−12.2 pts
Top 10
42.1%
Sep 2024 → Mar 2026 · range 42.1% – 90.3%
−14.6 pts
HHI
281
Sep 2024 → Mar 2026 · range 281 – 5,925
Broadly held−151

Quarterly Activity

vs Dec 31, 2025
New
84
Increased
49
Decreased
36
Sold Out
90
Unchanged
13
Holder count: -6
Institutional value: +15.2%
Shares held: -11.8%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega MILLENNIUM MANAGEMENT LLC +2,135,526 2,471,107
Mega UBS Group AG +1,779,273 2,257,069
Mega HSBC HOLDINGS PLC +1,556,366 1,595,839
Mid SOROS FUND MANAGEMENT LLC +1,500,222 1,830,222
Mega GOLDMAN SACHS GROUP INC +1,281,669 1,985,820

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Large KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC −4,867,569 67
Mid DARLINGTON PARTNERS CAPITAL MANAGEMENT, LP −3,839,405 0
Large MARSHALL WACE, LLP −1,795,349 990,806
Mega CITADEL ADVISORS LLC −452,893 1,913,218
Large Point72 Asset Management, L.P. −432,990 37,775

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mid GLAZER CAPITAL, LLC 7,537,536 $180,900,864
Mega FIL Ltd 3,992,145 $95,811,480
Mega VANGUARD CAPITAL MANAGEMENT LLC 3,882,231 $93,173,544
Mid AQR Arbitrage LLC 3,393,367 $81,440,808
Mid NEXPOINT ASSET MANAGEMENT, L.P. 3,358,217 $80,597,208

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
— Thomas Anthony Shea 18,173,259 $334,024,500
Mega VANGUARD GROUP INC 8,580,460 $157,708,852
Mega T. Rowe Price Investment Management, Inc. 7,779,413 $142,985,610
Mega NORGES BANK 5,974,029 $109,802,653
Large BROWN ADVISORY INC 3,376,401 $62,058,248
Filter: New 84 Increased 49 Reduced 36 Sold out 90 Unchanged 13
Showing 100 of 190
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mid GLAZER CAPITAL, LLC $180,900,864 8.50% 7,537,536
Large Temasek Holdings (Private) Ltd $102,401,136 4.81% 4,266,714
Mega FIL Ltd $95,811,480 4.50% 3,992,145
Mega VANGUARD CAPITAL MANAGEMENT LLC $93,173,544 4.38% 3,882,231
Mid AQR Arbitrage LLC $81,440,808 3.83% 3,393,367
Mid NEXPOINT ASSET MANAGEMENT, L.P. $80,597,208 3.79% 3,358,217
Mid O'Connor Alternative Investments LLC $76,483,296 3.59% 3,186,804
Mid Polar Asset Management Partners Inc. $70,665,072 3.32% 2,944,378
Mega MILLENNIUM MANAGEMENT LLC $59,306,568 2.79% 2,471,107
Mega BlackRock, Inc. $56,149,200 2.64% 2,339,550
Mega UBS Group AG $54,169,656 2.54% 2,257,069
Large Man Group plc $52,908,480 2.49% 2,204,520
Mega GOLDMAN SACHS GROUP INC $47,659,680 2.24% 1,985,820
Mega CITADEL ADVISORS LLC $45,362,832 2.13% 1,890,118
Large Pentwater Capital Management LP $45,360,000 2.13% 1,890,000
Mid First Trust Capital Management L.P. $44,212,536 2.08% 1,842,189
Mid SOROS FUND MANAGEMENT LLC $43,925,328 2.06% 1,830,222
Mid TIG Advisors, LLC $41,717,544 1.96% 1,738,231
Mega MORGAN STANLEY $39,624,744 1.86% 1,651,031
Mega HSBC HOLDINGS PLC $38,300,136 1.80% 1,595,839
Mega ALLIANCEBERNSTEIN L.P. $36,841,464 1.73% 1,535,061
Mega JPMORGAN CHASE & CO $35,229,216 1.66% 1,467,884
Mid ODDO BHF ASSET MANAGEMENT SAS $34,800,000 1.63% 1,450,000
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension $29,639,064 1.39% 1,234,961
Large Qube Research & Technologies Ltd $27,197,304 1.28% 1,133,221
Mega CITIGROUP INC $26,481,456 1.24% 1,103,394
Mega GEODE CAPITAL MANAGEMENT, LLC $26,378,928 1.24% 1,099,122
Mid Capula Management Ltd $25,793,064 1.21% 1,074,711
Large MARSHALL WACE, LLP $23,779,344 1.12% 990,806
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $23,631,648 1.11% 984,652
Mid ALPINE ASSOCIATES MANAGEMENT INC. $22,096,608 1.04% 920,692
Large Verition Fund Management LLC $20,697,912 0.97% 862,413
Mid METEORA CAPITAL, LLC $20,683,200 0.97% 861,800
Large Balyasny Asset Management L.P. $19,621,656 0.92% 817,569
Small SYQUANT CAPITAL SAS $18,946,776 0.89% 789,449
Mid Nearwater Capital Markets, Ltd $16,987,200 0.80% 707,800
Mid Fort Baker Capital Management LP $16,550,088 0.78% 689,587
Mid Westchester Capital Management, LLC $16,259,952 0.76% 677,498
Large Grantham, Mayo, Van Otterloo & Co. LLC $16,237,272 0.76% 676,553
Mid Alberta Investment Management Corp $16,188,000 0.76% 674,500
Mega BANK OF AMERICA CORP /DE/ Bank $14,975,400 0.70% 623,975
Mega STATE STREET CORP $14,400,576 0.68% 600,024
Large GABELLI FUNDS LLC $12,565,992 0.59% 523,583
Small CIBRA Capital Ltd $12,472,584 0.59% 519,691
Large Squarepoint Ops LLC $12,437,544 0.58% 518,231
Mega VANGUARD FIDUCIARY TRUST CO Bank $12,266,976 0.58% 511,124
Mid Groupe la Francaise $12,228,000 0.57% 509,500
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $11,988,288 0.56% 499,512
Small GABELLI & Co INVESTMENT ADVISERS, INC. $9,800,928 0.46% 408,372
Mid BOOTHBAY FUND MANAGEMENT, LLC $9,514,224 0.45% 396,426
Mid Carmignac Gestion $9,237,432 0.43% 384,893
Small CREDIT INDUSTRIEL ET COMMERCIAL $8,772,000 0.41% 365,500
Small Taconic Capital Advisors LP $8,196,672 0.39% 341,528
Mega AQR CAPITAL MANAGEMENT LLC $7,836,336 0.37% 326,514
Mid TPG GP A, LLC $7,800,000 0.37% 325,000
Micro FIFTH LANE CAPITAL, LP $7,743,120 0.36% 322,630
Mid TOKIO MARINE ASSET MANAGEMENT CO LTD $6,823,200 0.32% 284,300
Mid PICTON MAHONEY ASSET MANAGEMENT $6,576,000 0.31% 274,000
Small Trium Capital LLP $6,547,272 0.31% 272,803
Small Absolute Gestao de Investimentos Ltda. $5,883,840 0.28% 245,160
Mega NORTHERN TRUST CORP Bank $5,772,408 0.27% 240,517
Small Annis Gardner Whiting Capital Advisors, LLC $5,453,208 0.26% 227,217
Large SG Americas Securities, LLC Broker-Dealer $5,239,464 0.25% 218,311
Mid New York Life Investment Management LLC $5,176,272 0.24% 215,678
Mid Kryger Capital LLC $4,847,664 0.23% 201,986
Mid Vestcor Inc $4,200,000 0.20% 175,000
Mega Swiss National Bank Bank $3,986,400 0.19% 166,100
Small Maven Securities LTD Broker-Dealer $3,360,000 0.16% 140,000
Mid WOLVERINE ASSET MANAGEMENT LLC $2,947,392 0.14% 122,808
Mid ALGERT GLOBAL LLC $2,836,800 0.13% 118,200
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $2,787,792 0.13% 116,158
Mega BNP PARIBAS ARBITRAGE, SA $2,711,856 0.13% 112,994
Mid Voleon Capital Management LP $2,633,472 0.12% 109,728
Mega JANE STREET GROUP, LLC $2,556,192 0.12% 106,508
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $2,204,568 0.10% 91,857
Small WATER ISLAND CAPITAL LLC $2,186,880 0.10% 91,120
Small WEST PACES ADVISORS INC. $2,045,232 0.10% 85,218
Mid READYSTATE ASSET MANAGEMENT LP $1,971,888 0.09% 82,162
Small Varenne Capital Partners $1,845,744 0.09% 76,906
Small CSS LLC/IL $1,572,192 0.07% 65,508
Small Yakira Capital Management, Inc. $1,463,472 0.07% 60,978
Small Twin Securities, Inc. Broker-Dealer $1,448,928 0.07% 60,372
Large LMR Partners LLP $1,344,840 0.06% 56,035
Small Fieldview Capital Management, LLC $1,315,368 0.06% 54,807
Mega VANGUARD ASSET MANAGEMENT, Ltd $1,290,360 0.06% 53,765
Mega Legal & General Group Plc $1,263,144 0.06% 52,631
Large ExodusPoint Capital Management, LP $1,260,000 0.06% 52,500
Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS $1,200,000 0.06% 50,000
Large IEQ CAPITAL, LLC $1,132,080 0.05% 47,170
Mega FMR LLC $1,098,288 0.05% 45,762
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,036,800 0.05% 43,200
Micro Transmarket Holdings LP $1,025,424 0.05% 42,726
Small Kintayl Capital LP $1,020,192 0.05% 42,508
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $952,800 0.04% 39,700
Large Point72 Asset Management, L.P. $906,600 0.04% 37,775
Large STATE OF WISCONSIN INVESTMENT BOARD $899,688 0.04% 37,487
Micro Versor Investments LP $811,968 0.04% 33,832
Large Schonfeld Strategic Advisors LLC $809,016 0.04% 33,709
Mega BARCLAYS PLC $793,728 0.04% 33,072
Mega Vanguard Global Advisers, LLC $780,240 0.04% 32,510
Key facts CIK 1889956 CUSIP 68278B107 13F (30d) 1 filings 1 filers Visit website

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