$OSCR

$31.35 +$0.25 (0.8%) Close

$OSCR Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 302.2M shares outstanding

Who owns OSCR?

By type of holder

Institutions 65.4% Insiders 0.2% Everyone else 34.4%

Concentration Top 10 holders own 36.6%

BlackRock, Inc. 6.8% · Thrive Capital Partners III, L.P. 5.8%

Institutional ownership

65.4%

+7.6 pts vs last qtr

Institutional holders

402

+69 vs last qtr

Net shares bought

+23.1M

by institutions in Q2 2026

New / sold out

124 / 55

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

D. E. Shaw & Co., Inc. +7.2M
FMR LLC +3.8M

Biggest sellers in Q2 2026

BIT Capital GmbH −2.9M
Susquehanna International Group, LLP SOLD OUT −2.7M

Who is planning to sell?

Notices of proposed sale, last 12 months

$186M

36 notices from 18 people

Shares covered

6.7M

2.23% of the company

Arranged in advance

69%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Mark Bertolini Director 10b5-1 $83.1M
Mario Schlosser Director 10b5-1 $30.7M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2019–FY2025

+810.7%

+44.51% a year

Each share's claim on the business

−89.0%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$2.99M vs $625M

over 7 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years43% 3–5 years26% 1–3 years18% Under 1 year13%

Quarterly turnover

22.2%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting OSCR on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	20.6M	6.81%	+3.3M (+18.9%)	≤2021	0.0%
Shares held by quarter Peak holding20.6M (Q2'26) Change over 8 quarters+5.1M Share of the company6.810% BlackRock, Inc.'s full portfolio →
TR T. Rowe Price Investment Management, Inc.	13.0M	4.31%	+1.4M (+11.9%)	2024	0.2%
Shares held by quarter Peak holding13.0M (Q2'26) Change over 8 quarters+1.4M Share of the company4.310% T. Rowe Price Investment Management, Inc.'s full portfolio →

BlackRock, Inc.

20.6M

% of company

6.81%

Change vs last qtr

+3.3M (+18.9%)

Held since

≤2021

T. Rowe Price Investment Management, Inc.

13.0M

% of company

4.31%

Change vs last qtr

+1.4M (+11.9%)

Held since

2024

28 more super investors behind a free account

See every manager holding Oscar Health, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting OSCR on Form N-PORT; together they hold 24.7% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$217M	7.6M	2.51%	0.01%	June 30, 2026
IR iShares Russell 2000 ETF iShares Trust	$176M	6.2M	2.05%	0.21%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$217M

% of company

2.51%

% of the fund

0.01%

As of

June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$176M

% of company

2.05%

% of the fund

0.21%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Oscar Health, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
TC Thrive Capital Partners III, L.P. 5%+ holder 13D · 6.0%	17.5M	5.80%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company5.800% Disclosed stake13D · 6.0% View the 13D/G filing →
SS Sankaran Sid Insider	500.0K	0.17%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.170% Sankaran Sid's insider activity →

Thrive Capital Partners III, L.P.

5%+ holder13D · 6.0%

17.5M

% of company

5.80%

Change vs last qtr

—

Held since

—

Sankaran Sid

Insider

500.0K

% of company

0.17%

Change vs last qtr

—

Held since

—

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