ONESTREAM INC

$OS
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Institutional coverage

184 13F filers hold $OS.

13F holders
184
Insider buys · 90d
0
Congress · 90d
0

Smart Money · top-200 alpha cohort

3 holders · Q1 2026

$OS is held by 3 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 0.31%, with an average of 0.11% of portfolio. Largest holder: Oxford Asset Management LLP at 0.31%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.

01
Oxford Asset Management LLP
0.31% held
α +10.3pts
02
Citigroup Inc.
0.01% held
α +26.3pts
03
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.00% held
α +27.5pts

Smart Money shows holdings from our Top-Performer cohort — the 200 highest-alpha manager_13f funds in our universe. Position weight (current quarter) and QoQ delta versus prior quarter. α is the manager's annual alpha vs benchmark.

Institutional holders

Top 10 of 184 · Source: 13F-HR
01
Canandaigua National Bank & Trust Co.
4.58% of portfolio
15,075,072 sh
02
Old Mission Capital LLC
5.50% of portfolio
6,676,414 sh
03
ProShare Advisors LLC
0.01% of portfolio
5,974,029 sh
04
Brooktree Capital Management
0.34% of portfolio
4,266,714 sh
05
rebel Financial LLC
0.07% of portfolio
3,992,145 sh
06
Steel Grove Capital Advisors, LLC
1.41% of portfolio
3,393,367 sh
07
Evergreen Capital Management LLC
0.02% of portfolio
2,471,107 sh
08
Champlain Investment Partners, LLC
0.39% of portfolio
2,116,556 sh
09
Orrstown Financial Services Inc.
0.01% of portfolio
1,985,820 sh
10
Ninety One UK Ltd
0.24% of portfolio
1,890,000 sh
See all 184 13F holders · Pro →

Insider activity · last 90 days

36 transactions · 7 filers
16 Jan 2026
Hohenstein Ken —
▼ SOLD
120,000
$23.63
S
08 Jan 2026
McIntyre Pamela —
▼ SOLD
6,505
$23.58
S
06 Jan 2026
Mariner Jonathan D —
▼ SOLD
5,541
$23.59
S
06 Jan 2026
Mariner Jonathan D —
▼ SOLD
2,415
$22.66
S
16 Dec 2025
Hohenstein Ken —
▼ SOLD
40,000
$17.21
S
15 Dec 2025
Koefoed William A —
▼ SOLD
9,571
$17.73
S
02 Dec 2025
Mariner Jonathan D —
▼ SOLD
18,423
$20.90
S
17 Nov 2025
Hohenstein Ken —
▼ SOLD
40,000
$20.94
S
16 Oct 2025
Hohenstein Ken —
▼ SOLD
490
$17.59
S
16 Oct 2025
Hohenstein Ken —
▼ SOLD
39,510
$16.84
S
19 Sep 2025
Kinzer John —
▼ SOLD
30,000
$20.00
S
16 Sep 2025
Hohenstein Ken —
▼ SOLD
40,000
$18.69
S

Transaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.

Congress trades · last 90 days

No Congress trades

No STOCK Act filings reference $OS in the recent window.

Source data: SEC EDGAR · 13F-HR · Form 4 · U.S. House Clerk PTR (disclosures-clerk.house.gov) · Senate eFD (senate.gov) · Last refreshed 07:47 UTC.