Regeneron Pharmaceuticals, Inc.· REGN

🇺🇸 US · LargeSP500NASDAQ

Healthcare Biotechnology Website

Price: $803.90
Day: +0.72%
Mkt Cap: $82.82B
52W Range: $541.00 – $859.34
Volume: 599.1K
Beta: 0.24

D55D FrameworkQuarterly Data

Holdings Analysis

Insider activity, institutional flows, and fund ownership.

Smart Money: 3.1 / 5 (Neutral), from 3 of 3 components
Institutions Q2 2026: 1,393 institutions hold; 605 added, 546 reduced
Insiders Q3 2026: no purchases, 6 sales ($3.4M)

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Regeneron Pharmaceuticals, Inc.

REGN|Healthcare|Biotechnology

Current price: $804

Smart Money

Dimension 5 of 5

Insider selling pace · Q3 2026

1.9x

vs own 6-quarter average

Seller breadth · Q3 2026

4 sellers

vs 2.7 avg per quarter

Institutional net breadth · Q2 2026

-6

728 adding vs 734 reducing

Institutional ownership · Q2 2026

89.2%

1,393 institutions

Insider Selling Pace

Each quarter's selling vs this stock's own trailing 6-quarter average

Light <0.5xRoutineElevated >1.5xHeavy >3xBuying

Institutional Positions

Institutions adding above the line, reducing below, net as a line

NewIncreasedReducedClosedNet

Largest Institutional Holders, Q2 2026

By reported market value, and how each moved in the quarter

Holder

Change

BLACKROCK, INC.

9.1M

+2.4%

VANGUARD CAPITAL MANAGEMENT LLC

6.6M

+0.2%

DODGE & COX

4.9M

+9.9%

STATE STREET CORP

4.8M

+4.3%

STATE STREET CORP

4.8M

+3.6%

INVESCO LTD.

3.9M

+81.8%

ETF & Fund Activity, Q3 2026

How the covering funds split between buying, holding and selling

3 buying8 unchanged0 selling

11 funds held REGN in Q3 2026, holding 659.6K shares between them, up 1.3% on the quarter.

Largest fund holders

SPDR SERIES TRUST563.3K sh

NATIONWIDE MUTUAL FUNDS33.2K sh

ETF Series Solutions30.9K sh

Notable Insider Transactions, Q3 2026

Largest open-market purchases and sales by value in the last eight quarters

Sale · Oct 29

POON CHRISTINE A

$1.8M

Sale · Oct 29

POON CHRISTINE A

$1.3M

Sale · Jan 7

Bassler Bonnie L

$1.2M

Insider transactions from SEC Form 4 filings; institutional holdings from quarterly 13F filings, which are reported with a lag and can overlap between filers. 13F: quarterly institutional holdings report · ETF: Exchange-Traded Fund

See the complete picture

The full 5D Framework: Business Quality · Peer Comparison · Valuation · Analyst Sentiment · Smart Money

Explore REGN on stockoscope.com→

Generated September 23, 2026

For educational purposes only. Not financial advice. Data may be delayed or incomplete.

Smart Money Sentiment

REGN Smart Money Sentiment Score

A weighted 1-5 sentiment score across three smart money signals.

Smart Money

3.1/5

Neutral

Weighted across 3 components

Component Breakdown (3 of 3 available)

Insider Activity

40% weight

-35

Institutional Flow

50% weight

+18

Fund Flow

10% weight

+100

Overall Smart Money sentiment of 3.1/5 (Neutral) based on a weighted combination of 3 components. Insider activity uses a relative-baseline comparison against the stock's own history; institutional flow tracks position momentum and 13F share changes; fund flow measures ETF / mutual-fund buying vs selling. Higher scores indicate stronger bullish sentiment from professional investors.Last updated September 22, 2026.

Insider Trading Activity

Insider trading analysis comparing the latest quarter against the stock's own historical baseline.

Insider Selling Pace for REGN

Each quarter's selling vs the stock's own trailing 6-quarter average; 1.0x is typical for this stock. Green triangles mark quarters with insider buying.

Bearish Signal

Elevated insider selling in Q3 2026

6 sales totaling $3.4M (4.1K shares)

Share volume is elevated at 1.9x the historical average

4 different insiders sold this quarter

Sell-only pattern: no insider purchases across 15 quarters

1.9x

Selling pace

vs own 6-qtr average

Elevated

0.35%

Stake sold

of active insiders' holdings

4 sellers

Seller breadth

vs 1.3 avg per quarter

None

Insider buying

in the last 16 quarters

Notable Recent Transactions, REGN

Top 8 highest-value insider trades from the last 8 quarters

POON CHRISTINE A

Director

Sell

2,735 shares at $653.50

≈33.3% of their stake at the time

Oct 29, 2025$1.79M

POON CHRISTINE A

Director

Sell

1,915 shares at $654.42

≈35.0% of their stake at the time

Oct 29, 2025$1.25M

Bassler Bonnie L

Director

Sell

1,500 shares at $800.00

≈46.8% of their stake at the time

Jan 7, 2026$1.20M

McCourt Marion

EVP Commercial

Sell

1,000 shares at $1054.06

≈7.2% of their stake at the time

Oct 1, 2024$1.05M

McCourt Marion

EVP Commercial

Sell

1,215 shares at $850.00

≈8.5% of their stake at the time

Sep 2, 2026$1.03M

McCourt Marion

EVP Commercial

Sell

1,131 shares at $857.39

≈8.6% of their stake at the time

Sep 3, 2026$969.71K

McCourt Marion

EVP Commercial

Sell

1,000 shares at $844.61

≈7.2% of their stake at the time

Nov 1, 2024$844.61K

Zoghbi Huda Y

Director

Sell

800 shares at $800.00

≈32.0% of their stake at the time

Aug 10, 2026$640.00K

Institutional Ownership Analysis

Institutional ownership analysis with position momentum, 13F share flow, and ownership percentage trends.

Institutional Positions for REGN

Institutions adding (new + increased) above zero, reducing (reduced + closed) below, net as a line

New Increased Reduced Closed Net (adding − reducing)

Neutral

Mixed institutional activity in Q2 2026

89.2% institutional ownership

Balanced activity: 728 adding vs 734 reducing

13F shares increased by 3.8%, a notable change

Momentum weakening from prior quarter

-6

Net breadth

728 adding vs 734 reducing

Balanced

0.99

Add / reduce ratio

in Q2 2026

-65

New − closed

123 initiated, 188 exited

9 of 10

Top holders adding

largest holders with a known change

Position Changes

Q2 2026: how are institutions adjusting their positions?

+728 growing-734 shrinkingNet: -6

123

605

546

188

New (123)

Increased (605)

Reduced (546)

Closed (188)

Top Institutional Holders, REGN

Largest 8 institutional positions by ownership percentage as of Q2 2026

BLACKROCK, INC.

9.1M

$5.7B

Ownership

8.81%

+2.4%

VANGUARD CAPITAL MANAGEMENT LLC

6.6M

$4.1B

Ownership

6.41%

+0.2%

DODGE & COX

4.9M

$3.0B

Ownership

4.71%

+9.9%

STATE STREET CORP

4.8M

$3.0B

Ownership

4.68%

+4.3%

STATE STREET CORP

4.8M

$3.0B

Ownership

4.65%

+3.6%

INVESCO LTD.

3.9M

$2.5B

Ownership

3.81%

+81.8%

JPMORGAN CHASE & CO

3.8M

$2.4B

Ownership

3.65%

-12.0%

VANGUARD PORTFOLIO MANAGEMENT LLC

3.2M

$2.0B

Ownership

3.07%

+85.6%

ETF and Mutual Fund Holdings

ETF and mutual fund activity breakdown showing buying vs selling funds, top fund holders, and detailed holdings.

Fund Activity

Q3 2026: 11 ETFs and mutual funds reporting

3 buying0 sellingNet: +3

Buying (3)

Unchanged (8)

Selling (0)

In total, funds bought 8.3K shares and sold 0 this quarter. Each fund counts once in the bar above, whatever the size of its move.

Very Bullish

Funds accumulating in Q3 2026

11 ETFs and mutual funds reporting

3 funds buying vs 0 selling

Top Fund Holders, REGN

Largest 8 ETF and mutual fund positions by shares held, each fund's latest filing

SPDR SERIES TRUST

563.3K

Weight

2.79%

Jul 31, 2026No change

NATIONWIDE MUTUAL FUNDS

33.2K

Weight

0.00%

Jul 31, 2026Increased

ETF Series Solutions

30.9K

Weight

—

Jul 31, 2026No change

Tidal Trust IV

22.3K

Weight

3.60%

Jul 31, 2026Increased

Tidal Trust I

4.3K

Weight

0.02%

Jul 31, 2026No change

Tidal ETF Trust

4.3K

Weight

0.02%

Jul 31, 2026No change

GLENMEDE FUND INC

4.0K

Weight

0.24%

Jul 31, 2026Increased

Roundhill ETF Trust

2.2K

Weight

0.00%

Jun 30, 2026No change

Regeneron Pharmaceuticals, Inc.· REGN

Holdings Analysis

Insider Trading Activity

1.3Transaction History500Real market purchases and sales onlyShow All Types

Institutional Ownership Analysis

2.4Detailed Holdings173Most recent institutional positions with changes and valuations

ETF and Mutual Fund Holdings

3.3Fund Holdings Details25Most recent ETF and mutual fund holdings with share counts and weights

Search stocks

Holdings Analysis

Insider Trading Activity

1.3Transaction History500Real market purchases and sales onlyShow All Types

Institutional Ownership Analysis

2.4Detailed Holdings173Most recent institutional positions with changes and valuations

ETF and Mutual Fund Holdings

3.3Fund Holdings Details25Most recent ETF and mutual fund holdings with share counts and weights