−12% from the high · +28% from the low
Balanced into a 18-day expiry: 0.83 puts per call by open interest, the most call OI sits at $890.00, the most put OI at $810.00, max pain $790.00.
REGN options carry 34.6K contracts of open interest across 17 expiries, 6.8% of it in the Oct 16 contract, with 0.83 puts per call.
| Expiry | Call OI · on the day | Put OI · on the day | Puts per call | Share of OI % | Strikes |
|---|---|---|---|---|---|
| Oct 24 days | 447 | 235 | 0.53 | 2.0 | 85 |
| Oct 911 days | 75 | 114 | 1.52 | 0.55 | 80 |
| Oct 1618 days | 1.55K | 805 | 0.52 | 6.8 | 116 |
| Oct 2325 days | 56 | 41 | 0.73 | 0.28 | 61 |
| Oct 3032 days | 153 | 114 | 0.75 | 0.77 | 61 |
| Nov 639 days | 2 | 1 | 0.50 | 0.01 | 61 |
| Nov 2053 days | 1.22K | 1.15K | 0.95 | 6.9 | 116 |
| Dec 1881 days | 7K | 4.73K | 0.67 | 34 | 164 |
91% of open interest sits beyond the Oct 16 contract · 116 strikes listed for it · 34.6K contracts open in all
The Oct 16 contract holds 1.55K calls and 805 puts, the most call OI at $890.00 and the most put OI at $810.00; max pain $790.00, +4.2% from the close.
Revenue $4.29B, +17% on a year earlier; profit $1.30B, −6.8% in the Jun 2026 quarter, consolidated.
| Quarter | Revenue $ | Revenue YoY | Profit $ | Profit YoY | EPS $ | Market on the day |
|---|---|---|---|---|---|---|
| Jun 2026filed Jul 30 | $4.29B | ▲ +17% | $1.30B | ▼ −6.8% | 12.23 | ▲ +3.3%S&P 500 +0.7% · +2.6 pp |
| Mar 2026filed Jul 30 | $3.61B | ▲ +19% | $727.2M | ▼ −10% | 6.75 | ▲ +3.3%S&P 500 +0.7% · +2.6 pp |
| Dec 2025filed Feb 4 | $3.88B | ▲ +2.5% | $844.6M | ▼ −8.0% | 7.78 | —not reached |
| Sep 2025filed Oct 28 | $3.75B | ▲ +0.90% | $1.46B | ▲ +8.9% | 13.62 | —not reached |
| Jun 2025filed Jul 30 | $3.68B | ▲ +3.6% | $1.39B | ▼ −2.8% | 12.81 | ▲ +3.3%S&P 500 +0.7% · +2.6 pp |
| Mar 2025filed Jul 30 | $3.03B | ▼ −3.7% | $808.7M | ▲ +12% | 7.27 | ▲ +3.3%S&P 500 +0.7% · +2.6 pp |
| Dec 2024filed Feb 5 | $3.79B | ▲ +10% | $917.7M | ▼ −21% | 8.12 | —not reached |
| Sep 2024filed Oct 28 | $3.72B | ▲ +11% | $1.34B | ▲ +33% | 11.54 | —not reached |
| Year | Revenue $ | Revenue YoY | Profit $ | Profit YoY | EPS $ |
|---|---|---|---|---|---|
| FY25to Dec 2025 | $14.34B | ▲ +0.99% | $4.50B | ▲ +2.1% | 41.48 |
| FY24to Dec 2024 | $14.20B | ▲ +8.3% | $4.41B | ▲ +12% | 38.34 |
| FY23to Dec 2023 | $13.12B | ▲ +7.8% | $3.95B | ▼ −8.9% | 34.77 |
| FY22to Dec 2022 | $12.17B | ▼ −24% | $4.34B | ▼ −46% | 38.22 |
| FY21to Dec 2021 | $16.07B | ▲ +89% | $8.08B | ▲ +130% | 71.97 |
REGN trades at 19 times trailing earnings against 20 for its industry, 2.3 times book value, revenue +9.3% over twelve months, a 0.25% dividend yield, market cap $71.24B.
| Stock | Market cap | P/E | P/B | Close $ |
|---|---|---|---|---|
| REGNRegeneron Pharmaceuticals Inc | $71.24Bon Sep 30 | 19consolidated | 2.3 | $758.27 |
| UTHRUnited Therapeutics Corp | $23.24Bon Sep 30 | 19consolidated | 3.6 | $541.89 |
| RPRXRoyalty Pharma plc Class A Ordinary Shares | $22.65Bon Sep 30 | 31consolidated | — | $58.36 |
| BMRNBioMarin Pharmaceuticals Inc | $11.61Bon Sep 30 | 150consolidated | 1.8 | $60.00 |
| LQDALiquidia Corporation Common Stock | $2.71Bon Sep 30 | 22consolidated | 14 | $30.26 |
| ANIPANI Pharmaceuticals, Inc. | $1.77Bon Sep 30 | 16consolidated | 3.0 | $72.65 |
| STOKStoke Therapeutics, Inc. Common Stock | $1.68Bon Sep 30 | — | 4.9 | $26.00 |
| MLTXMoonLake Immunotherapeutics Class A Ordinary Shares | $995.7Mon Sep 30 | — | 2.3 | $11.70 |
| JBIOJade Biosciences, Inc. Common Stock | $893.5Mon Sep 30 | 1.7consolidated | 2.0 | $14.05 |
| CLYMClimb Bio, Inc. Common Stock | $658.8Mon Sep 30 | — | 2.8 | $11.47 |
13F managers hold 190% of shares, BlackRock, Inc. the largest at 19%, VANGUARD CAPITAL MANAGEMENT LLC 14% and Dodge & Cox 10%, as filed for the quarter to Jun 2026.
| Manager | Shares | Of outstanding | Value | Change on quarter |
|---|---|---|---|---|
| BlackRock, Inc. | 18.2M | 19% | $11.37B | +332K |
| VANGUARD CAPITAL MANAGEMENT LLC | 13.3M | 14% | $8.27B | −50.3K |
| Dodge & Cox | 9.74M | 10% | $6.07B | +826K |
| STATE STREET CORP | 9.67M | 10% | $6.03B | +340K |
| Invesco Ltd. | 7.88M | 8.4% | $4.91B | +4.43M |
| JPMORGAN CHASE & CO | 7.55M | 8.0% | $4.77B | — |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.35M | 6.8% | $3.96B | +2.91M |
| FRANKLIN RESOURCES INC | 5.54M | 5.9% | $3.46B | +99.5K |
| GEODE CAPITAL MANAGEMENT, LLC | 5.25M | 5.6% | $3.26B | +36.2K |
| Nuveen, LLC | 4.04M | 4.3% | $2.52B | −90.2K |
No open-market insider buying or selling in the last 90 days.
| Insider | Trade | Shares | Price | Held after |
|---|---|---|---|---|
| RYAN ARTHUR FDirector | sold · May 1, 2026 | 2 | $710.87 | 17,511 |
| RYAN ARTHUR FDirector | sold · May 1, 2026 | 5 | $711.49 | 17,506 |
| RYAN ARTHUR FDirector | sold · May 1, 2026 | 1 | $712.09 | 17,505 |
| RYAN ARTHUR FDirector | sold · May 1, 2026 | 2 | $714.13 | 17,503 |
| RYAN ARTHUR FDirector | sold · May 1, 2026 | 4 | $707.40 | 17,519 |
| RYAN ARTHUR FDirector | sold · May 1, 2026 | 6 | $709.45 | 17,513 |
| RYAN ARTHUR FDirector | sold · May 1, 2026 | 7 | $706.74 | 17,523 |
| RYAN ARTHUR FDirector | sold · May 1, 2026 | 14 | $705.56 | 17,530 |
| RYAN ARTHUR FDirector | sold · May 1, 2026 | 15 | $704.28 | 17,544 |
| RYAN ARTHUR FDirector | sold · May 1, 2026 | 24 | $703.46 | 17,559 |
Nothing upcoming on record; the last was a dividend of $0.94 a share, ex-date Aug 18, 2026.
| Ex-date | Action | Amount or ratio | Record date |
|---|---|---|---|
| recent | |||
| Aug 18, 2026 | dividend | $0.94 | — |
| May 20, 2026 | dividend | $0.94 | — |
REGN is −8.0% over 20 sessions against the S&P 500's +0.1%, 12% below its 52-week high, realised volatility 29% annualised.
| Window | From $ | REGN % | S&P 500 % | Difference pp |
|---|---|---|---|---|
| 120 sessionssince Apr 9 | $767.87 | ▼ −1.2% | ▲ +12% | −13 |
| 60 sessionssince Jul 7 | $676.24 | ▲ +12% | ▲ +2.0% | +10 |
| 20 sessionssince Sep 1 | $823.85 | ▼ −8.0% | ▲ +0.11% | −8.1 |
| 5 sessionssince Sep 23 | $801.81 | ▼ −5.4% | ▼ −0.67% | −4.8 |
| 1 sessionsince Sep 29 | $750.54 | ▲ +1.0% | ▼ −0.21% | +1.2 |
Short sales were 44% of reported volume on Sep 30, 2026, against 54% over the last 25 sessions.
| Session | Short volume | Reported volume | Short share |
|---|---|---|---|
| Sep 30, 2026 | 120K | 269K | 44.4% |
| Sep 29, 2026 | 153K | 298K | 51.3% |
| Sep 28, 2026 | 159K | 377K | 42.2% |
| Sep 25, 2026 | 98K | 226K | 43.3% |
| Sep 24, 2026 | 76.5K | 165K | 46.3% |
| Sep 23, 2026 | 93.2K | 210K | 44.3% |
| Sep 22, 2026 | 99.4K | 227K | 43.8% |
| Sep 21, 2026 | 110K | 191K | 57.6% |
| Sep 18, 2026 | 115K | 180K | 64.1% |
| Sep 17, 2026 | 136K | 204K | 66.6% |
| Filed | Form | Report date |
|---|---|---|
| Sep 30, 2026 | 8-K | Sep 24, 2026 |
| Sep 3, 2026 | 4 | Sep 2, 2026 |
| Sep 3, 2026 | 144 | — |
| Sep 3, 2026 | 4 | Sep 2, 2026 |
| Sep 2, 2026 | 144 | — |
| Sep 2, 2026 | 144 | — |
| Aug 21, 2026 | 4 | Aug 19, 2026 |
| Aug 20, 2026 | 4 | Aug 18, 2026 |
| Aug 20, 2026 | N-PX | Jun 30, 2026 |
| Aug 12, 2026 | 4 | Aug 10, 2026 |
| Aug 12, 2026 | 4 | Aug 10, 2026 |
| Aug 10, 2026 | 144 | — |
| Aug 10, 2026 | 144 | — |
| Aug 7, 2026 | 13F-HR | Jun 30, 2026 |
| Jul 30, 2026 | 10-Q | Jun 30, 2026 |
| Jul 30, 2026 | 8-K | Jul 30, 2026 |
| Jul 7, 2026 | 4 | Jul 2, 2026 |
| Jul 6, 2026 | 8-K | Jul 6, 2026 |
| Jul 2, 2026 | 144 | — |
| Jun 17, 2026 | 8-K | Jun 12, 2026 |
| May 8, 2026 | 13F-HR | Mar 31, 2026 |
| May 4, 2026 | 4 | May 1, 2026 |
| Apr 30, 2026 | SCHEDULE 13G | — |
| Apr 29, 2026 | 10-Q | Mar 31, 2026 |
| Apr 29, 2026 | 8-K | Apr 29, 2026 |
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