Sanofi is 10% Owner at REGENERON PHARMACEUTICALS, INC. (REGN). They have made 64 open-market trades across 11 companies since 2013, most recently 2026-08-06.
56 open-market purchases totalling $7.7B since 2013, against 8 sales. Across 54 scored buys the stock is down 6.1% at ninety days, and 8.4 points behind the S&P over the same stretch.
55 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 15% | 29% | 31% |
| Avg Move | -8.2% | -0.6% | -6.1% |
| Alpha | -5.5% | -1.8% | -8.4% |
| Scored | 55 | 55 | 54 |
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 25% | 38% | 38% |
| Avg Move | +1.2% | +7.4% | +9.0% |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ATTO | BUY | 2026-08-06 | 2026-08-07 | $17.00 | $5.1M | +14.0% | +21.4% | — |
| TBIO | BUY | 2021-09-14 | 2021-09-14 | $38.00 | $2.7B | -15.6% | -18.7% | -50.0% |
| ICVX | BUY | 2021-08-02 | 2021-08-02 | $15.00 | $1.0M | +29.5% | +55.4% | +13.8% |
| INZY | BUY | 2020-07-28 | 2020-07-29 | $16.00 | $1.3M | +25.8% | +49.2% | +21.4% |
| REGN | SELL | 2020-06-09 | 2020-06-11 | $597.48 | $143.7M | +2.1% | -0.0% | -7.3% |
| REGN | SELL | 2020-05-29 | 2020-05-29 | $509.85 | $2.4B | +0.3% | +1.0% | +1.6% |
| REGN | SELL | 2020-03-09 | 2020-03-11 | $489.65 | $126.2M | +2.5% | +16.4% | +37.0% |
| REGN | SELL | 2019-09-10 | 2019-09-12 | $281.15 | $97.2M | +2.1% | +7.6% | +31.6% |
| FULC | BUY | 2019-07-22 | 2019-07-23 | $16.00 | $1.5M | -0.8% | -10.3% | -65.6% |
| REGN | SELL | 2019-03-08 | 2019-03-12 | $412.17 | $108.1M | -6.6% | -6.2% | -27.5% |
| MYOK | SELL | 2019-02-13 | 2019-02-15 | $37.66 | $314.0M | +5.5% | +26.7% | +14.2% |
| REGN | SELL | 2018-09-06 | 2018-09-10 | $406.68 | $85.0M | -1.8% | -3.1% | -4.2% |
| REGN | SELL | 2018-06-08 | 2018-06-11 | $309.31 | $75.2M | +5.6% | +17.2% | +26.7% |
| MYOK | BUY | 2018-05-25 | 2018-05-29 | $49.00 | $7.3M | -0.7% | +2.6% | +28.5% |
| REGN | BUY | 2017-08-25 | 2017-08-29 | $481.60 | $39.8M | -7.4% | -9.4% | -22.1% |
| REGN | BUY | 2017-08-25 | 2017-08-29 | $481.28 | $33.9M | -7.4% | -9.4% | -22.1% |
| REGN | BUY | 2017-08-24 | 2017-08-25 | $482.04 | $51.0M | -2.5% | -9.5% | -20.5% |
| REGN | BUY | 2017-08-23 | 2017-08-25 | $478.98 | $29.0M | -2.5% | -9.5% | -20.5% |
| REGN | BUY | 2017-08-23 | 2017-08-25 | $480.44 | $111.3M | -2.5% | -9.5% | -20.5% |
| MYOK | BUY | 2017-08-14 | 2017-08-16 | $35.50 | $12.4M | +5.8% | +9.9% | -11.7% |
| REGN | BUY | 2017-06-02 | 2017-06-06 | $478.01 | $71.3M | -4.0% | +2.3% | +3.2% |
| REGN | BUY | 2017-06-02 | 2017-06-06 | $478.20 | $64.9M | -4.0% | +2.3% | +3.2% |
| ALNY | BUY | 2017-05-31 | 2017-06-01 | $71.87 | $42.8M | +6.4% | +17.0% | +19.1% |
| REGN | BUY | 2017-01-11 | 2017-01-13 | $369.78 | $34.8M | -7.5% | +2.0% | +0.6% |
| REGN | BUY | 2017-01-11 | 2017-01-13 | $369.71 | $32.3M | -7.5% | +2.0% | +0.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
| VYGR | 2,352,941 | $4.4M |
| INZY | 438,875 | $1.8M |
| FULC | 464,285 | $1.7M |
| KBIO | 579,030 | — |
| Total | $3.9B |
Shares reported on the most recent Form 4, priced at the 2026-08-07 close. 1 holding could not be priced and is excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Scored | 8 | 8 | 8 |