Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionCetera Investment Advisers
Latest Disclosed Ownership16,006 shares
Latest Disclosed Value $ 12,367,078
Cetera Investment Advisers ownership in REGN / Regeneron Pharmaceuticals, Inc.

On May 13, 2026 - Cetera Investment Advisers filed a 13F-HR form disclosing ownership of 16,006 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $12,367,078 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 15,808 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 1.25% during the quarter.

Cetera Investment Advisers 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 100 of underlying shares valued at $5,960 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)
2026-05-13 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,006 198 1.25 12,367 1.36 0.0132
2026-02-17 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 15,808 -241 -1.50 12,202 35.21 0.0133
2025-11-14 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,049 6,295 64.54 9,024 76.25 0.0105
2025-08-08 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 9,754 -821 -7.76 5,121 -23.65 0.0086
2025-05-06 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 10,575 1,336 14.46 6,707 1.90 0.0130
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 9,239 494 5.65 6,581 -28.41 0.0138
2024-11-13 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 8,745 799 10.06 9,193 10.06 0.0201
2024-08-22 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 7,946 -1,807 -18.53 8,352 -11.03 0.0192
2024-05-24 2024-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 9,753 5,955 156.79 9,387 181.47 0.0221
2024-05-15 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,102 -1,696 2,023 0.0218
2024-02-13 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,798 118 3.21 3,336 10.14 0.0271
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,680 -114 -3.00 3,028 11.08 0.0261
2023-08-10 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,794 90 2.43 2,726 -10.42 0.0229
2023-05-15 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,704 509 15.93 3,043 32.02 0.0266
2023-02-14 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,195 1,771 124.37 2,305 134.96 0.0214
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,424 -1,315 -48.01 981 -39.41 0.0196
2022-08-11 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,739 -282 -9.33 1,619 -23.27 0.0258
2022-05-13 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,021 -62 -2.01 2,110 8.37 0.0303
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,083 459 17.49 1,947 22.61 0.0279
2021-11-16 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,624 54 2.10 1,588 10.66 0.0253
2021-08-13 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,570 -189 -6.85 1,435 9.96 0.0230
2021-05-17 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,759 483 21.22 1,305 18.64 0.0257
2021-02-17 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,276 2,276 1,100 0.0218
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
(%)
2026-05-13 2026-03-31 13F REGENERON PHARMACEUTICALS COM Call 100 6 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.