바이오크리스트 파마슈티컬스(BioCryst Pharmaceuticals, Inc.)
MX ˙ BMV ˙ US09058V1035
SecurityMX:BCRX / BioCryst Pharmaceuticals, Inc.
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership187,721 shares
Latest Disclosed Value $ 1,787,104
Millennium Management Llc ownership in BCRX / BioCryst Pharmaceuticals, Inc.

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 187,721 shares of BioCryst Pharmaceuticals, Inc. (MX:BCRX) valued at $1,787,104 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 137,626 shares of BioCryst Pharmaceuticals, Inc.. This represents a change in shares of 36.40% during the quarter.

Millennium Management Llc has a history of taking positions in derivatives of the underlying security (BCRX) in the form of stock options. The firm currently holds call options representing 130,000 of underlying shares valued at $1,237,600 USD and put 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:BCRX / BioCryst 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 BIOCRYST PHARMACEUTICALS COM 09058V103 187,721 50,095 36.40 1,787 66.54 0.0007
2026-02-17 2025-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 137,626 -323,321 -70.14 1,073 -69.33 0.0005
2025-11-14 2025-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 460,947 -1,445,720 -75.82 3,499 -79.52 0.0015
2025-08-14 2025-06-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 1,906,667 -1,906,207 -49.99 17,084 -40.26 0.0082
2025-05-15 2025-03-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 3,812,874 3,022,769 382.58 28,597 381.33 0.0152
2025-02-14 2024-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 790,105 -532,795 -40.27 5,942 -40.91 0.0029
2024-11-14 2024-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 1,322,900 -428,661 -24.47 10,054 -7.11 0.0048
2024-08-14 2024-06-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 1,751,561 -78,608 -4.30 10,825 16.42 0.0050
2024-05-15 2024-03-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 1,830,169 153,987 9.19 9,297 -7.40 0.0040
2024-02-14 2023-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 1,676,182 -3,307,025 -66.36 10,040 -71.54 0.0043
2023-11-14 2023-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 4,983,207 -318,813 -6.01 35,281 -5.48 0.0178
2023-08-14 2023-06-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 5,302,020 864,691 19.49 37,326 0.86 0.0184
2023-05-15 2023-03-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 4,437,329 4,421,538 28,000.37 37,007 20,345.86 0.0212
2023-02-14 2022-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 15,791 -1,310,651 -98.81 181 -98.92 0.0001
2022-11-14 2022-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 1,326,442 -622,153 -31.93 16,713 -18.93 0.0099
2022-08-15 2022-06-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 1,948,595 1,893,640 3,445.80 20,616 2,206.04 0.0128
2022-05-16 2022-03-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 54,955 -60,879 -52.56 894 -44.26 0.0005
2022-02-14 2021-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 115,834 -306,019 -72.54 1,604 -73.54 0.0008
2021-11-15 2021-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 421,853 -293,287 -41.01 6,062 -46.38 0.0036
2021-08-16 2021-06-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 715,140 715,140 11,306 0.0069
2021-05-17 2021-03-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 0 -286,632 -100.00 0 -100.00
2021-02-16 2020-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 286,632 -3,107,280 -91.55 2,135 -81.69 0.0015
2020-11-16 2020-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 3,393,912 -3,171,629 -48.31 11,658 -62.74 0.0144
2020-08-14 2020-06-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 6,565,541 113,200 1.75 31,285 142.43 0.0429
2020-05-14 2020-03-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 6,452,341 -3,488,336 -35.09 12,905 -62.37 0.0290
2020-02-14 2019-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 9,940,677 2,177,342 28.05 34,295 54.20 0.0429
2019-11-14 2019-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 7,763,335 667,038 9.40 22,241 -17.30 0.0352
2019-08-15 2019-06-30 13F/A-1 BIOCRYST PHARMACEUTICALS COM 09058V103 7,096,297 5,539,512 355.83 26,895 112.24 0.0404
2019-05-14 2019-03-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 1,556,785 748,758 92.66 12,672 94.33 0.0190
2019-02-15 2018-12-31 13F/A-1 BIOCRYST PHARMACEUTICALS COM 09058V103 808,027 -371,780 -31.51 6,521 -27.56 0.0102
2019-02-14 2018-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 808,027 6,521
2018-11-14 2018-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 1,179,807 -515,526 -30.41 9,002 -7.33 0.0110
2018-08-14 2018-06-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 1,695,333 -994,922 -36.98 9,714 -24.30 0.0127
2018-05-15 2018-03-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 2,690,255 -1,019,287 -27.48 12,833 -29.54 0.0171
2018-02-14 2017-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 3,709,542 -46,623 -1.24 18,214 -7.46 0.0251
2017-11-14 2017-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 3,756,165 350,301 10.29 19,682 3.93 0.0300
2017-08-14 2017-06-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 3,405,864 567,215 19.98 18,937 -20.58 0.0338
2017-05-15 2017-03-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 2,838,649 2,651,655 1,418.04 23,845 1,913.94 0.0437
2017-02-14 2016-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 186,994 125,838 205.77 1,184 338.52 0.0025
2016-11-14 2016-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 61,156 31,088 103.39 270 217.65 0.0005
2016-08-15 2016-06-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 30,068 -332,221 -91.70 85 -91.71 0.0002
2016-05-16 2016-03-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 362,289 189,037 109.11 1,025 -42.67 0.0026
2016-02-16 2015-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 173,252 -781,636 -81.86 1,788 -83.58 0.0038
2015-11-16 2015-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 954,888 -962,133 -50.19 10,886 -61.96 0.0211
2015-08-14 2015-06-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 1,917,021 -514,102 -21.15 28,621 30.37 0.0541
2015-05-15 2015-03-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 2,431,123 2,340,855 2,593.23 21,953 1,899.36 0.0408
2015-02-17 2014-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 90,268 -199,846 -68.89 1,098 -61.30 0.0023
2014-11-14 2014-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 290,114 141,816 95.63 2,837 50.03 0.0072
2014-08-14 2014-06-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 148,298 -441,454 -74.85 1,891 -69.70 0.0052
2014-05-15 2014-03-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 589,752 -54,003 -8.39 6,240 27.53 0.0181
2014-02-14 2013-12-31 13F BIOCRYST PHARMACEUTICALS COM 09058V103 643,755 398,163 162.12 4,893 173.66 0.0154
2013-11-14 2013-09-30 13F BIOCRYST PHARMACEUTICALS COM 09058V103 245,592 245,592 1,788 0.0058
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
(%)
2026-05-15 2026-03-31 13F BIOCRYST PHARMACEUTICALS COM Call 130,000 1,238 n/a n/a n/a
2025-11-14 2025-09-30 13F BIOCRYST PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-08-14 2025-06-30 13F BIOCRYST PHARMACEUTICALS COM Call 100,000 896 n/a n/a n/a
2025-02-14 2024-12-31 13F BIOCRYST PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F BIOCRYST PHARMACEUTICALS COM Call 101,300 770 n/a n/a n/a
2024-08-14 2024-06-30 13F BIOCRYST PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-15 2024-03-31 13F BIOCRYST PHARMACEUTICALS COM Call 201,200 -66.00 1,022 -71.16 n/a n/a n/a
2024-02-14 2023-12-31 13F BIOCRYST PHARMACEUTICALS COM Call 591,800 294.01 3,545 233.40 n/a n/a n/a
2023-11-14 2023-09-30 13F BIOCRYST PHARMACEUTICALS COM Call 150,200 48.86 1,063 49.72 n/a n/a n/a
2023-08-14 2023-06-30 13F BIOCRYST PHARMACEUTICALS COM Call 100,900 -57.84 710 -64.43 n/a n/a n/a
2023-05-15 2023-03-31 13F BIOCRYST PHARMACEUTICALS COM Call 239,300 137.64 1,996 72.66 n/a n/a n/a
2023-02-14 2022-12-31 13F BIOCRYST PHARMACEUTICALS COM Call 100,700 1,156 n/a n/a n/a
2021-08-16 2021-06-30 13F BIOCRYST PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-17 2021-03-31 13F BIOCRYST PHARMACEUTICALS COM Call 40,000 407 n/a n/a n/a
2020-11-16 2020-09-30 13F BIOCRYST PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-08-14 2020-06-30 13F BIOCRYST PHARMACEUTICALS COM Call 650,000 469.68 3,097 1,258.33 n/a n/a n/a
2020-05-14 2020-03-31 13F BIOCRYST PHARMACEUTICALS COM Call 114,100 227.87 228 90.00 n/a n/a n/a
2020-02-14 2019-12-31 13F BIOCRYST PHARMACEUTICALS COM Call 34,800 -83.51 120 -80.13 n/a n/a n/a
2019-11-14 2019-09-30 13F BIOCRYST PHARMACEUTICALS COM Call 211,000 -73.62 604 -80.08 n/a n/a n/a
2019-08-15 2019-06-30 13F/A BIOCRYST PHARMACEUTICALS COM Call 800,000 100.00 3,032 -6.88 n/a n/a n/a
2019-08-14 2019-06-30 13F KARYOPHARM THERAPEUTICS COM Call 515,000 5,475 n/a n/a n/a
2019-05-14 2019-03-31 13F BIOCRYST PHARMACEUTICALS COM Call 400,000 -50.00 3,256 7.39 n/a n/a n/a
2017-08-14 2017-06-30 13F BIOCRYST PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-05-15 2017-03-31 13F BIOCRYST PHARMACEUTICALS COM Call 200,000 1,680 n/a n/a n/a
2017-02-14 2016-12-31 13F BIOCRYST PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-11-14 2016-09-30 13F BIOCRYST PHARMACEUTICALS COM Call 300,000 1,323 n/a n/a n/a
Disclosed Put 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
(%)
2023-08-14 2023-06-30 13F BIOCRYST PHARMACEUTICALS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-15 2023-03-31 13F BIOCRYST PHARMACEUTICALS COM Put 56,800 474 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.