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SC 13D/A ·Filed Sep 18, 2026

OSCR

Oscar Health, Inc.
NEUTRAL
Impact 3/10
Horizonweeks Processed1mo ago SEC0001193125-26-395843
Activist stake amendment (position change)
Actionable Insight • Neutral

Monitor for any future 13D amendments that could signal a change in Thrive's investment thesis or engagement strategy. The current filing is purely administrative — no catalyst for near-term price action.

DirectionNeutral
Confidencehigh
Horizonweeks
Latest settled — T+20d
OSCR ▲ +3.99% at T+20d
NEUTRAL call +3.99% · α vs SPY +4.90% · entry $31.29 → $32.54
Next anchor: T+60d in 7w
Latest observation: T+24 -4.15% FF3 residual α
Entry = T+0 close
Sep 18, 2026
via day close
T+1d
-1.98%
call -1.98% · α -1.97%
$30.67
settled 5w ago
T+5d
-5.24%
call -5.24% · α -4.22%
$29.65
settled 4w ago
T+20d
+3.99%
call +3.99% · α +4.90%
$32.54
settled 10d ago
T+60d
Pending
in 7w

Price Chart

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Executive Summary

Thrive Capital (Joshua Kushner) filed Amendment No. 4 to its Schedule 13D on Oscar Health, reporting a net reduction in beneficial ownership from ~12.5% to ~12.1% of Class A Common Stock. The change resulted from internal fund-to-fund transfers of Class B shares for Class A shares, followed by pro-rata distributions of Class A shares to limited partners — a portfolio rebalancing and distribution event, not a market sale. The filing does not disclose any new activist demands or changes in purpose.

Key Financial Metrics

Stake
12.1%
Investor
Joshua Kushner / Thrive Capital

Key Facts

  • Joshua Kushner's aggregate beneficial ownership decreased from ~12.5% to ~12.1% of Class A Common Stock.
  • Thrive Capital Partners II, III, and Claremount TW transferred Class B shares to Thrive VII Growth and Claremount VII in exchange for Class A shares, then distributed those Class A shares pro-rata to limited partners without consideration.
  • No new activist demands, strategic review, board changes, or purpose modifications were disclosed.
  • The filing is an internal restructuring and distribution event, not a market sale or change in investment thesis.

Financial Impact

No direct financial impact. The ownership reduction is ~0.4 percentage points, resulting from internal fund distributions.

Risk Factors

  • No material risks identified from this filing alone.

Investment Themes

Traditional Finance

Documents Analyzed

This report is based on 3 SEC documents filed with EDGAR.

DocumentAccession Number
SC 13D/A Filing (Primary)0001193125-26-395843
Document: 0001193125-26-395843-index.html0001193125-26-395843
Document: 0001193125-26-395843.txt0001193125-26-395843
15 reports for OSCR
Performance horizon
80% Hit rate @ T+60 4 of 5 directional calls Went positive at some point 6 of 8 best @ T+60▲ +57.36%May 6, 2026
Filters
Rows
Reports for OSCR — sortable, filterable
TypeNow
Sep 18, 2026
5w ago
SC 13D/A
NEUTRAL ★ 3/10
$31.29awaiting T+60—$31.10 (−0.61%)
Sep 16, 2026
5w ago
8-K
BULLISH ★ 7/10
$32.34awaiting T+60—$31.10 (−3.83%)
Sep 8, 2026
6w ago
Insider Cluster
BEARISH ★ 5/10
$31.76awaiting T+60—$31.10 (+2.08%)
Aug 18, 2026
9w ago
144
BEARISH ★ 4/10
$32.30awaiting T+60—$31.10 (+3.72%)
Aug 10, 2026
11w ago
144
NEUTRAL ★ 2/10
$27.97awaiting T+60—$31.10 (+11.19%)
Jul 6, 2026
16w ago
Insider Cluster
BEARISH ★ 5/10
$31.12 $30.84▲ +0.90%▲ +3.15%$31.10 (+0.06%)
Jul 1, 2026
16w ago
Insider Cluster
BEARISH ★ 5/10
$32.18 $29.65▲ +7.86%▲ +10.91%$31.10 (+3.36%)
Jun 11, 2026
19w ago
Institutional Cluster
BULLISH ★ 7/10
$28.91 $33.01▲ +14.18%▲ +10.36%$31.10 (+7.58%)
Jun 8, 2026
20w ago
8-K
NEUTRAL ★ 3/10
$27.39 $30.33▲ +10.73%▲ +7.22%$31.10 (+13.55%)
Jun 4, 2026
20w ago
Insider Cluster
NEUTRAL ★ 2/10
$24.51 $29.83▲ +21.71%▲ +18.42%$31.10 (+26.89%)
Showing 10 of 15

US Market Status

Market Closed — Opens Tue (< 1m)

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Report published Sep 18, 2026