Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionMacquarie Group Ltd
Latest Disclosed Ownership13,050 shares
Latest Disclosed Value $ 10,082,952
Macquarie Group Ltd reports 61.41% decrease in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 15, 2026 - Macquarie Group Ltd filed a 13F-HR form disclosing ownership of 13,050 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $10,082,952 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 33,817 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -61.41% during the quarter.

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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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 13,050 -20,767 -61.41 10,083 -61.37 0.0470
2026-02-13 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 33,817 -52,851 -60.98 26,102 -46.44 0.1141
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 86,668 9,943 12.96 48,731 20.98 0.0569
2025-08-14 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 76,725 -2,113 -2.68 40,280 -19.44 0.0494
2025-08-14 2025-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 78,838 -175 -0.22 50,001 -6.35 0.0621
2025-05-15 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 84,783 5,770 46,238 0.0378
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 79,013 3,872 5.15 53,390 -32.41 0.0648
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 75,141 -1,284 -1.68 78,992 -1.66 0.0853
2024-08-09 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 76,425 -423 -0.55 80,325 8.60 0.0921
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 76,848 -1,890 -2.40 73,965 6.96 0.0839
2024-02-14 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 78,738 -23,013 -22.62 69,155 -17.41 0.0799
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 101,751 498 0.49 83,737 15.10 0.1052
2023-10-27 2023-06-30 13F/A-2 REGENERON PHARMACEUTICALS COM 75886F107 101,253 -69,846 -40.82 72,754 -48.25 0.0832
2023-10-12 2023-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 101,253 -69,846 72,754 0.0731
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 101,253 -69,846 72,754 0.0738
2023-06-01 2023-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 171,099 -68,587 -28.62 140,587 -18.70 0.1670
2023-05-15 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 171,099 -68,587 140,587 0.1291
2023-02-21 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 239,686 -18,887 -7.30 172,931 -2.91 0.2042
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 258,573 -20,339 -7.29 178,123 8.04 0.2185
2022-08-17 2022-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 278,912 -5,396 -1.90 164,873 -16.97 0.1851
2022-08-15 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 278,912 -5,396 164,873 0.0591
2022-05-16 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 284,308 10,575 3.86 198,567 14.87 0.1510
2022-02-11 2021-12-31 13F Regeneron Pharmaceuticals COM 75886F107 273,733 55,802 25.61 172,867 31.07 0.1440
2021-11-12 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 217,931 111,854 105.45 131,887 122.60 0.1124
2021-08-13 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 106,077 2,865 2.78 59,248 21.33 0.0487
2021-05-14 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 103,212 862 0.84 48,833 -1.24 0.0690
2021-02-16 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 102,350 4,164 4.24 49,446 -10.04 0.0722
2020-11-13 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 98,186 4,356 4.64 54,962 -6.08 0.0931
2020-08-11 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 93,830 10,174 12.16 58,517 43.26 0.1008
2020-05-15 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 83,656 -21,574 -20.50 40,848 3.38 0.0839
2020-03-18 2019-12-31 13F/A-2 REGENERON PHARMACEUTICALS COM 75886F107 105,230 -191 -0.18 39,511 35.11 0.0564
2020-02-28 2019-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 105,230 0 39,511 0.0571
2020-02-14 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 105,230 -191 39,511 49,582.9565
2019-11-14 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 105,421 28,000 36.17 29,243 20.67 0.0490
2019-11-06 2019-06-30 13F/A-2 REGENERON PHARMACEUTICALS COM 75886F107 77,421 10,877 16.35 24,233 -11.31 0.0409
2019-09-24 2019-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 77,421 0 24,233 0.0412
2019-08-14 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 77,421 10,877 24,233
2019-05-15 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 66,544 -17,816 -21.12 27,324 -13.28 0.0466
2019-02-15 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 84,360 14,030 19.95 31,509 10.88 0.0609
2018-11-15 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 70,330 2,790 4.13 28,416 21.96 0.0463
2019-03-21 2018-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 67,540 5,593 9.03 23,300 9.23 0.0402
2018-08-14 2018-06-30 13F RETAIL OPPORTUNITY INVTS COR COM 75886F107 67,540 5,593 23,300
2018-05-11 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 61,947 7,823 14.45 21,332 5.92 0.0389
2018-02-14 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 54,124 27,393 102.48 20,139 68.50 0.0356
2017-11-08 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 26,731 -4,877 -15.43 11,952 -23.01 0.0214
2017-08-14 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 31,608 513 1.65 15,524 28.83 0.0284
2017-05-15 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 31,095 -7,890 -20.24 12,050 -15.80 0.0219
2017-03-30 2016-12-31 13F/A-1 REGENERON PHARMACEUTICALS Common Stock 75886F107 38,985 -52 -0.13 14,311 -8.81 0.0274
2017-02-15 2016-12-31 13F Regeneron Pharmaceuticals COM 75886F107 38,985 14,311
2016-11-15 2016-09-30 13F Regeneron Pharmaceuticals COM 75886F107 39,037 3,823 10.86 15,693 27.61 0.0302
2016-09-14 2016-06-30 13F/A-1 REGENERON PHARMACEUTICALS COMMON 75886F107 35,214 2,514 7.69 12,298 4.34 0.0242
2016-08-15 2016-06-30 13F REGENERON PHARMACEUTICALS COMMON 75886F107 35,214 12,298
2016-05-16 2016-03-31 13F REGENERON PHARMACEUTICALS COMMON 75886F107 32,700 -6,250 -16.05 11,787 -44.26 0.0238
2016-02-16 2015-12-31 13F REGENERON PHARMACEUTICALS COMMON 75886F107 38,950 -1,200 -2.99 21,145 13.22 0.0434
2015-11-16 2015-09-30 13F REGENERON PHARMACEUTICALS COMMON 75886F107 40,150 4,750 13.42 18,676 3.42 0.0400
2015-08-21 2015-06-30 13F/A-1 REGENERON PHARMACEUTICALS COMMON 75886F107 35,400 0 0.00 18,058 12.98 0.0357
2015-08-14 2015-06-30 13F REGENERON PHARMACEUTICALS COMMON 75886F107 35,400 18,058
2015-05-18 2015-03-31 13F REGENERON PHARMACEUTICALS COMMON 75886F107 35,400 100 0.28 15,983 10.37 0.0314
2015-02-17 2014-12-31 13F REGENERON PHARMACEUTICALS COMMON 75886F107 35,300 4,100 13.14 14,481 28.73 0.0299
2014-11-14 2014-09-30 13F REGENERON PHARMACEUTICALS COMMON 75886F107 31,200 2,000 6.85 11,249 36.38 0.0241
2014-08-14 2014-06-30 13F REGENERON PHARMACEUTICALS COMMON 75886F107 29,200 -1,500 -4.89 8,248 -10.52 0.0184
2014-05-15 2014-03-31 13F REGENERON PHARMACEUTICALS Common 75886F107 30,700 4,700 18.08 9,218 28.81 0.0159
2014-02-14 2013-12-31 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 26,000 1,100 4.42 7,156 -8.14 0.0128
2013-11-14 2013-09-30 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 24,900 0 0.00 7,790 39.11 0.0152
2013-08-16 2013-06-30 13F/A-1 REGENERON PHARMACEUTICALS COMMON 75886F107 24,900 24,900 5,600 0.0122
2013-08-14 2013-06-30 13F REGENERON PHARMACEUTICALS COMMON 75886F107 24,900 5,600 0.0122
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.