Sarepta Therapeutics, Inc.
MX ˙ BMV ˙ US8036071004
SecurityMX:SRPT / Sarepta Therapeutics, Inc.
InstitutionBalyasny Asset Management Llc
Latest Disclosed Ownership392,044 shares
Latest Disclosed Value $ 8,530,877
Balyasny Asset Management Llc ownership in SRPT / Sarepta Therapeutics, Inc.

On May 15, 2026 - Balyasny Asset Management Llc filed a 13F-HR form disclosing ownership of 392,044 shares of Sarepta Therapeutics, Inc. (MX:SRPT) valued at $8,530,877 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 91,619 shares of Sarepta Therapeutics, Inc.. This represents a change in shares of 327.91% during the quarter.

Balyasny Asset Management Llc has a history of taking positions in derivatives of the underlying security (SRPT) in the form of stock options. The firm currently holds call options representing 150,000 of underlying shares valued at $3,264,000 USD and put options representing 75,000 of underlying shares valued at $1,632,000 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:SRPT / Sarepta Therapeutics, 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 SAREPTA THERAPEUTICS COM 803607100 392,044 300,425 327.91 8,531 332.78 0.0102
2026-02-17 2025-12-31 13F SAREPTA THERAPEUTICS COM 803607100 91,619 38,135 71.30 1,972 91.36 0.0025
2025-11-14 2025-09-30 13F SAREPTA THERAPEUTICS COM 803607100 53,484 -391,244 -87.97 1,031 -86.45 0.0013
2025-08-14 2025-06-30 13F SAREPTA THERAPEUTICS COM 803607100 444,728 444,728 7,605 0.0115
2025-05-15 2025-03-31 13F SAREPTA THERAPEUTICS COM 803607100 0 -165,973 -100.00 0 -100.00
2025-02-14 2024-12-31 13F SAREPTA THERAPEUTICS COM 803607100 165,973 -158,359 -48.83 20,181 -50.18 0.0301
2024-11-14 2024-09-30 13F SAREPTA THERAPEUTICS COM 803607100 324,332 -208,586 -39.14 40,506 -51.89 0.0661
2024-08-14 2024-06-30 13F SAREPTA THERAPEUTICS COM 803607100 532,918 23,713 4.66 84,201 27.73 0.1474
2024-05-13 2024-03-31 13F SAREPTA THERAPEUTICS COM 803607100 509,205 10,376 2.08 65,922 37.04 0.1152
2024-02-14 2023-12-31 13F SAREPTA THERAPEUTICS COM 803607100 498,829 278,404 126.30 48,102 80.03 0.0903
2023-11-14 2023-09-30 13F SAREPTA THERAPEUTICS COM 803607100 220,425 220,425 26,720 0.0545
2023-08-14 2023-06-30 13F SAREPTA THERAPEUTICS COM 803607100 0 -61,077 -100.00 0 -100.00
2023-05-15 2023-03-31 13F SAREPTA THERAPEUTICS COM 803607100 61,077 61,077 8,418 0.0211
2023-02-14 2022-12-31 13F SAREPTA THERAPEUTICS COM 803607100 0 -368,915 -100.00 0 -100.00
2022-11-15 2022-09-30 13F SAREPTA THERAPEUTICS COM 803607100 368,915 353,814 2,342.98 40,780 3,502.47 0.1251
2022-08-15 2022-06-30 13F SAREPTA THERAPEUTICS COM 803607100 15,101 -198,530 -92.93 1,132 -93.22 0.0037
2022-05-16 2022-03-31 13F SAREPTA THERAPEUTICS COM 803607100 213,631 107,703 101.68 16,689 74.96 0.0526
2022-02-14 2021-12-31 13F SAREPTA THERAPEUTICS COM 803607100 105,928 -137,308 -56.45 9,539 -57.59 0.0326
2021-12-01 2021-09-30 13F/A-1 SAREPTA THERAPEUTICS COM 803607100 243,236 80,847 49.79 22,494 78.18 0.0937
2021-11-15 2021-09-30 13F SAREPTA THERAPEUTICS COM 803607100 243,236 80,847 22,494 0.0925
2021-08-16 2021-06-30 13F SAREPTA THERAPEUTICS COM 803607100 162,389 124,482 328.39 12,624 346.87 0.0598
2021-05-17 2021-03-31 13F SAREPTA THERAPEUTICS COM 803607100 37,907 -49,702 -56.73 2,825 -81.09 0.0139
2021-02-16 2020-12-31 13F SAREPTA THERAPEUTICS COM 803607100 87,609 87,609 14,936 0.0830
2019-11-14 2019-09-30 13F SAREPTA THERAPEUTICS COM 803607100 0 -144,256 -100.00 0 -100.00
2019-08-14 2019-06-30 13F SAREPTA THERAPEUTICS COM 803607100 144,256 -15,649 -9.79 21,920 15.01 0.1401
2019-05-15 2019-03-31 13F SAREPTA THERAPEUTICS COM 803607100 159,905 54,266 51.37 19,059 65.33 0.1267
2019-02-14 2018-12-31 13F SAREPTA THERAPEUTICS COM 803607100 105,639 55,463 110.54 11,528 42.25 0.0831
2018-11-14 2018-09-30 13F SAREPTA THERAPEUTICS COM 803607100 50,176 -127,500 -71.76 8,104 -65.49 0.0368
2018-08-14 2018-06-30 13F SAREPTA THERAPEUTICS COM 803607100 177,676 -242,446 -57.71 23,485 -24.55 0.1066
2018-05-15 2018-03-31 13F SAREPTA THERAPEUTICS COM 803607100 420,122 298,926 246.65 31,127 361.62 0.1300
2018-02-14 2017-12-31 13F Sarepta Therapeutics Common Stock 803607100 121,196 17,407 16.77 6,743 43.22 0.0211
2017-11-14 2017-09-30 13F Sarepta Therapeutics Common Stock 803607100 103,789 -46,144 -30.78 4,708 -6.85 0.0184
2017-08-14 2017-06-30 13F Sarepta Therapeutics Common Stock 803607100 149,933 -289,312 -65.87 5,054 -61.13 0.0208
2017-05-15 2017-03-31 13F Sarepta Therapeutics Common Stock 803607100 439,245 255,602 139.18 13,002 158.13 0.0606
2017-02-14 2016-12-31 13F Sarepta Therapeutics Common Stock 803607100 183,643 183,643 0.00 5,037 0.0271
2015-08-14 2015-06-30 13F Sarepta Therapeutics Common Stock 803607100 0 -11,594 -100.00 0 -100.00
2015-05-15 2015-03-31 13F Sarepta Therapeutics Common Stock 803607100 11,594 11,594 -91.72 154 -97.11 0.0012
2013-11-14 2013-09-30 13F Sarepta Therapeutics Common Stock 803607100 0 -140,000 -100.00 0 -100.00
2013-08-14 2013-06-30 13F Sarepta Therapeutics Common Stock 803607100 140,000 140,000 5,325 0.0894
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 SAREPTA THERAPEUTICS COM Call 150,000 -25.11 3,264 -24.27 n/a n/a n/a
2026-02-17 2025-12-31 13F SAREPTA THERAPEUTICS COM Call 200,300 0.00 4,310 11.69 n/a n/a n/a
2025-11-14 2025-09-30 13F SAREPTA THERAPEUTICS COM Call 200,300 3,860 n/a n/a n/a
2025-08-14 2025-06-30 13F SAREPTA THERAPEUTICS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-15 2025-03-31 13F SAREPTA THERAPEUTICS COM Call 30,300 1,934 n/a n/a n/a
2025-02-14 2024-12-31 13F SAREPTA THERAPEUTICS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F SAREPTA THERAPEUTICS COM Call 60,000 -52.00 7,493 -62.06 n/a n/a n/a
2024-08-14 2024-06-30 13F SAREPTA THERAPEUTICS COM Call 125,000 19,750 n/a n/a n/a
2024-02-14 2023-12-31 13F SAREPTA THERAPEUTICS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-11-14 2023-09-30 13F SAREPTA THERAPEUTICS COM Call 61,900 -51.22 7,504 -48.37 n/a n/a n/a
2023-08-14 2023-06-30 13F SAREPTA THERAPEUTICS COM Call 126,900 50.18 14,533 24.78 n/a n/a n/a
2023-05-15 2023-03-31 13F SAREPTA THERAPEUTICS COM Call 84,500 11,647 n/a n/a n/a
2022-11-15 2022-09-30 13F SAREPTA THERAPEUTICS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-15 2022-06-30 13F SAREPTA THERAPEUTICS COM Call 92,700 6,949 n/a n/a n/a
2022-02-14 2021-12-31 13F SAREPTA THERAPEUTICS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-12-01 2021-09-30 13F/A SAREPTA THERAPEUTICS COM Call 78,000 7,213 n/a n/a n/a
2021-11-15 2021-09-30 13F SAREPTA THERAPEUTICS COM Call 78,000 7,213 n/a n/a n/a
2021-08-16 2021-06-30 13F SAREPTA THERAPEUTICS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-17 2021-03-31 13F SAREPTA THERAPEUTICS COM Call 221,000 60.73 16,471 -29.74 n/a n/a n/a
2021-02-16 2020-12-31 13F SAREPTA THERAPEUTICS COM Call 137,500 23,442 n/a n/a n/a
2019-11-14 2019-09-30 13F SAREPTA THERAPEUTICS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-06-30 13F SAREPTA THERAPEUTICS COM Call 110,000 26.44 14,287 37.77 n/a n/a n/a
2019-05-15 2019-03-31 13F SAREPTA THERAPEUTICS COM Call 87,000 210.71 10,370 239.33 n/a n/a n/a
2019-02-14 2018-12-31 13F SAREPTA THERAPEUTICS COM Call 28,000 3,056 n/a n/a n/a
2018-11-14 2018-09-30 13F SAREPTA THERAPEUTICS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-08-14 2018-06-30 13F SAREPTA THERAPEUTICS COM Call 113,700 -38.54 15,029 9.64 n/a n/a n/a
2018-05-15 2018-03-31 13F SAREPTA THERAPEUTICS COM Call 185,000 13,707 n/a n/a n/a
2017-05-15 2017-03-31 13F Sarepta Therapeutics Common Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-02-14 2016-12-31 13F Sarepta Therapeutics Common Stock Call 300,000 8,229 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
(%)
2026-05-15 2026-03-31 13F SAREPTA THERAPEUTICS COM Put 75,000 -50.00 1,632 -49.44 n/a n/a n/a
2026-02-17 2025-12-31 13F SAREPTA THERAPEUTICS COM Put 150,000 -60.84 3,228 -56.26 n/a n/a n/a
2025-11-14 2025-09-30 13F SAREPTA THERAPEUTICS COM Put 383,000 32.07 7,380 48.82 n/a n/a n/a
2025-08-14 2025-06-30 13F SAREPTA THERAPEUTICS COM Put 290,000 4,959 n/a n/a n/a
2024-05-13 2024-03-31 13F SAREPTA THERAPEUTICS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-14 2023-12-31 13F SAREPTA THERAPEUTICS COM Put 43,800 -67.65 4,224 -74.27 n/a n/a n/a
2023-11-14 2023-09-30 13F SAREPTA THERAPEUTICS COM Put 135,400 0.00 16,413 5.85 n/a n/a n/a
2023-08-14 2023-06-30 13F SAREPTA THERAPEUTICS COM Put 135,400 -44.82 15,506 -54.16 n/a n/a n/a
2023-05-15 2023-03-31 13F SAREPTA THERAPEUTICS COM Put 245,400 -40.01 33,823 -36.20 n/a n/a n/a
2023-02-14 2022-12-31 13F SAREPTA THERAPEUTICS COM Put 409,100 7.77 53,011 26.33 n/a n/a n/a
2022-11-15 2022-09-30 13F SAREPTA THERAPEUTICS COM Put 379,600 36.15 41,961 100.78 n/a n/a n/a
2022-08-15 2022-06-30 13F SAREPTA THERAPEUTICS COM Put 278,800 67.85 20,899 61.06 n/a n/a n/a
2022-05-16 2022-03-31 13F SAREPTA THERAPEUTICS COM Put 166,100 277.50 12,976 227.51 n/a n/a n/a
2022-02-14 2021-12-31 13F SAREPTA THERAPEUTICS COM Put 44,000 -29.03 3,962 -30.90 n/a n/a n/a
2021-12-01 2021-09-30 13F/A SAREPTA THERAPEUTICS COM Put 62,000 5,734 n/a n/a n/a
2021-11-15 2021-09-30 13F SAREPTA THERAPEUTICS COM Put 62,000 5,734 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.