Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionCredit Agricole S A
Latest Disclosed Ownership92,416 shares
Latest Disclosed Value $ 71,404,298
Credit Agricole S A ownership in REGN / Regeneron Pharmaceuticals, Inc.

On May 15, 2026 - Credit Agricole S A filed a 13F-HR form disclosing ownership of 92,416 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $71,404,298 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 108,943 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -15.17% during the quarter.

Credit Agricole S A has a history of taking positions in derivatives of the underlying security (REGN) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:REGN / Regeneron Pharmaceuticals, Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 92,416 -16,527 -15.17 71,404 -15.09 0.0594
2026-02-17 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 108,943 74,499 216.29 84,090 334.21 0.1909
2025-11-14 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 34,444 28,546 483.99 19,367 417.81 0.0513
2025-05-14 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 5,898 -5,224 -46.97 3,741 -52.79 0.0117
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 11,122 -10,650 -48.92 7,923 -65.39 0.0232
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 21,772 12,354 131.17 22,888 131.23 0.0983
2024-08-13 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 9,418 745 8.59 9,899 27.67 0.0532
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 8,673 3,489 67.30 7,754 70.28 0.0833
2024-02-13 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 5,184 1,289 33.09 4,553 42.06 0.0520
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,895 259 7.12 3,205 22.70 0.0518
2023-07-31 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,636 160 4.60 2,613 -8.54 0.0473
2023-05-15 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,476 204 6.23 2,856 21.02 0.0581
2023-02-13 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,272 -2,113 -39.24 2,361 -36.39 0.0487
2022-11-14 2022-09-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 5,385 2,714 101.61 3,710 134.96 0.0703
2022-11-10 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 5,385 2,714 3,710 0.0144
2022-08-08 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,671 2,418 955.73 1,579 792.09 0.0386
2022-05-16 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 253 -250 -49.70 177 -44.34 0.0031
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 503 0 0.00 318 4.61 0.0051
2021-11-15 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 503 -100 -16.58 304 -9.79 0.0058
2021-08-10 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 603 -83 -12.10 337 4.01 0.0069
2021-05-17 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 686 300 77.72 324 73.26 0.0083
2021-02-12 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 386 -12,633 -97.04 187 -97.43 0.0061
2020-11-13 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 13,019 602 4.85 7,287 -5.90 0.3887
2020-08-13 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 12,417 3,250 35.45 7,744 73.01 0.4915
2020-05-14 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 9,167 9,019 6,093.92 4,476 7,892.86 0.3836
2020-02-12 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 148 0 0.00 56 36.59 0.0031
2019-11-08 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 148 0 0.00 41 -10.87 0.0020
2019-08-14 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 148 48 48.00 46 12.20 0.0024
2019-05-14 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 100 0 0.00 41 10.81 0.0022
2019-02-13 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 100 0 0.00 37 -7.50 0.0021
2018-11-13 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 100 0 0.00 40 17.65 0.0019
2018-08-10 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 100 100 34 0.0024
2018-02-13 2017-12-31 13F REGENERON PHARMACE COM 75886F107 0 -47,332 -100.00 0 -100.00
2017-11-14 2017-09-30 13F REGENERON PHARMACE COM 75886F107 47,332 21,614 84.04 21,163 67.53 0.0722
2017-08-14 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 25,718 2,142 9.09 12,632 38.27 0.0414
2017-05-11 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 23,576 8,375 55.10 9,136 63.73 0.0279
2017-03-02 2016-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 15,201 661 4.55 5,580 -4.55 0.0180
2017-02-13 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 15,201 5,580
2016-11-10 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 14,540 1,109 8.26 5,846 24.62 0.0190
2016-08-10 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 13,431 477 3.68 4,691 0.47 0.0181
2016-05-12 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,954 -1,677 -11.46 4,669 -41.22 0.0221
2016-02-11 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,631 -10,911 -42.72 7,943 -33.15 0.0372
2015-11-13 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 25,542 7,653 42.78 11,882 30.20 0.0590
2015-08-12 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,889 -1,574 -8.09 9,126 3.83 0.0428
2015-05-12 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 19,463 -4,935 -20.23 8,789 -11.64 0.0392
2015-02-09 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 24,398 -93,253 -79.26 9,947 -76.55 0.0425
2014-11-13 2014-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 117,651 -8,342 -6.62 42,415 19.18 0.1810
2014-08-12 2014-06-30 13F REGENERON PHARMACE COM 75886F107 125,993 -21,154 -14.38 35,590 -19.45 0.1505
2014-05-12 2014-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 147,147 32,412 28.25 44,185 39.91 0.1779
2014-02-11 2013-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 114,735 99,067 632.29 31,581 544.25 0.1305
2013-11-13 2013-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 15,668 -1,399 -8.20 4,902 0.0215
2013-08-14 2013-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,067 17,067 0
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2017-08-14 2017-06-30 13F REGENERON PHARMACEUTICALS COM Call 0 0 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.