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OS · OneStream, Inc.

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Market Cap
$5.90B
Shares
247.56M

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: $9,237,432
Total Shares: 93,591,712

Institutional Ownership Trend

7 quarters

Holder Concentration

Across 182 13F filers
Top Holder
100.0%
Sep 2024 → Mar 2026 · range 0.0% – 100.0%
of institutional value
Top 5
100.0%
Sep 2024 → Mar 2026 · range 0.0% – 100.0%
of institutional value
Top 10
100.0%
Sep 2024 → Mar 2026 · range 0.0% – 100.0%
of institutional value
HHI
10,000
Sep 2024 → Mar 2026 · range 0 – 10,000
Highly concentrated

Quarterly Activity

vs Dec 31, 2025
New
85
Increased
49
Decreased
35
Sold Out
91
Unchanged
13
Holder count: -6
Institutional value:
Shares held: +19.3%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Showing 100 of 190
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1889956 CUSIP 68278B107 13F (30d) 4 filings 1 filers Visit website