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REGN · Regeneron Pharmaceuticals, Inc.

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$834.04 +7.40 (+0.90%) At close · Aug 21
Market Cap
$85.87B
Shares
102.95M

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: 1,329
Total Value: $58,452,899,031
Total Shares: 93,955,452

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 1,329 13F filers · Δ vs Mar 31, 2026
Top Holder
9.7%
Sep 2023 → Jun 2026 · range 9.6% – 11.3%
−0.1 pts
Top 5
31.4%
Sep 2023 → Jun 2026 · range 31.4% – 42.9%
−0.7 pts
Top 10
46.7%
Sep 2023 → Jun 2026 · range 44.7% – 58.0%
+2.0 pts
HHI
299
Sep 2023 → Jun 2026 · range 297 – 461
Broadly held+2

Quarterly Activity

vs Mar 31, 2026
New
122
Increased
484
Decreased
539
Sold Out
200
Unchanged
184
Holder count: -78
Institutional value: -16.6%
Shares held: +3.6%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 1,379
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 872589 CUSIP 75886F107 13F (30d) 1045 filings 1002 filers Visit website Investor relations