# ONESTREAM INC CL A

ONESTREAM INC CL A is a security (CUSIP 68278B107) tracked across SEC portfolio filings. 144 institutional managers reported $1.9B on Form 13F as of 2026-03-31; 13 registered fund positions totaling $42.8M via N-PORT as of 2026-03-31.

## Summary

- Issuer: ONESTREAM INC
- Class: CL A
- CUSIP: 68278B107
- Asset category: EC
- 13F holders: 144
- 13F value: $1.9B
- 13F period: 2026-03-31
- N-PORT fund positions: 13
- N-PORT value: $42.8M
- N-PORT report: 2026-03-31

## Top institutional holders (Form 13F)

_Showing 15 of 144 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $157.7M | 8,580,460 |
| Temasek Holdings (Private) Ltd | SINGAPORE, U0 | $102.4M | 4,266,714 |
| FIL Ltd | HAMILTON, D0 | $95.8M | 3,992,145 |
| [AQR Arbitrage LLC](https://search.stillhousedata.com/firm/114626) | Greenwich, CT | $81.4M | 3,393,367 |
| [NEXPOINT ASSET MANAGEMENT, L.P.](https://search.stillhousedata.com/firm/149653) | Dallas, TX | $80.6M | 3,358,217 |
| O'Connor Alternative Investments LLC | NEW YORK, NY | $76.5M | 3,186,804 |
| [Polar Asset Management Partners Inc.](https://search.stillhousedata.com/firm/162681) | TORONTO, A6 | $70.7M | 2,944,378 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $59.3M | 2,471,107 |
| BlackRock, Inc. | New York, NY | $56.1M | 2,339,550 |
| UBS Group AG | Zurich, V8 | $54.2M | 2,257,069 |
| Man Group plc | LONDON, X0 | $52.9M | 2,204,520 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $47.7M | 1,985,820 |
| [CITADEL ADVISORS LLC](https://search.stillhousedata.com/firm/148826) | MIAMI, FL | $45.9M | 1,890,118 |
| Pentwater Capital Management LP | Naples, FL | $45.4M | 1,890,000 |
| [First Trust Capital Management L.P.](https://search.stillhousedata.com/firm/317825) | Chicago, IL | $44.2M | 1,842,189 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $22.3M | 2.73% |
| [The Merger Fund](https://search.stillhousedata.com/fund/S000005158) | Merger Fund | $13.3M | 53.81% |
| GDL Fund | GDL Fund | $3.2M | 279.53% |
| [The Gabelli ABC Fund](https://search.stillhousedata.com/fund/S000001070) | Gabelli Investor Funds Inc | $1.4M | 34.60% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $1.2M | 0.21% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $1.0M | 0.34% |
| [Virtus Westchester Event-Driven Fund](https://search.stillhousedata.com/fund/S000040968) | Virtus Event Opportunities Trust | $916K | 70.86% |
| [Comstock Capital Value Fund](https://search.stillhousedata.com/fund/S000001057) | Comstock Funds, Inc. | $360K | 350.38% |
| [Enterprise Mergers and Acquisitions Fund](https://search.stillhousedata.com/fund/S000017793) | Gabelli 787 Fund, Inc. | $288K | 50.55% |
| [The Merger Fund VL](https://search.stillhousedata.com/fund/S000005160) | Merger Fund VL | $132K | 55.10% |
| [Fidelity Trend Fund](https://search.stillhousedata.com/fund/S000007496) | Fidelity Trend Fund | $110K | 0.27% |
| [TIFF MULTI-ASSET FUND](https://search.stillhousedata.com/fund/S000006387) | TIFF Investment Program | $-747K | -5.37% |
| [Blackstone Alternative Multi-Strategy Fund](https://search.stillhousedata.com/fund/S000045538) | Blackstone Alternative Investment Funds | $-766K | -2.12% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/68278B107.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.