Fulcrum Therapeutics, Inc.
US ˙ NasdaqGM ˙ US3596161097

SecurityFULC / Fulcrum Therapeutics, Inc.
InstitutionSquarepoint Ops LLC
Latest Disclosed Ownership175,944 shares
Latest Disclosed Value $ 1,349,490
Squarepoint Ops LLC ownership in FULC / Fulcrum Therapeutics, Inc.

On May 15, 2026 - Squarepoint Ops LLC filed a 13F-HR form disclosing ownership of 175,944 shares of Fulcrum Therapeutics, Inc. (US:FULC) valued at $1,349,490 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 65,852 shares of Fulcrum Therapeutics, Inc.. This represents a change in shares of 167.18% during the quarter. The current value of the position is $566,540 USD.

Squarepoint Ops LLC has a history of taking positions in derivatives of the underlying security (FULC) 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.

FULC / Fulcrum 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 FULCRUM THERAPEUTICS COM 359616109 175,944 110,092 167.18 1,349 81.32 0.0016
2026-02-13 2025-12-31 13F FULCRUM THERAPEUTICS COM 359616109 65,852 48,026 269.42 745 356.44 0.0008
2025-11-14 2025-09-30 13F FULCRUM THERAPEUTICS COM 359616109 17,826 4,151 30.35 164 73.40 0.0002
2025-08-27 2025-06-30 13F/A-1 FULCRUM THERAPEUTICS COM 359616109 13,675 13,675 94 0.0001
2025-08-14 2025-06-30 13F FULCRUM THERAPEUTICS COM 359616109 13,675 13,675 94 0.0001
2025-02-14 2024-12-31 13F FULCRUM THERAPEUTICS COM 359616109 0 -88,130 -100.00 0 -100.00
2024-11-14 2024-09-30 13F FULCRUM THERAPEUTICS COM 359616109 88,130 63,613 259.46 315 106.58 0.0005
2024-08-14 2024-06-30 13F FULCRUM THERAPEUTICS COM 359616109 24,517 -30,043 -55.06 152 -70.49 0.0003
2024-05-15 2024-03-31 13F FULCRUM THERAPEUTICS COM 359616109 54,560 54,560 515 0.0009
2024-02-14 2023-12-31 13F FULCRUM THERAPEUTICS COM 359616109 0 -58,900 -100.00 0 -100.00
2023-11-14 2023-09-30 13F FULCRUM THERAPEUTICS COM 359616109 58,900 -41,891 -41.56 262 -21.39 0.0006
2023-08-14 2023-06-30 13F FULCRUM THERAPEUTICS COM 359616109 100,791 -218,920 -68.47 333 -63.56 0.0010
2023-05-15 2023-03-31 13F FULCRUM THERAPEUTICS COM 359616109 319,711 319,711 911 0.0037
2022-11-14 2022-09-30 13F FULCRUM THERAPEUTICS COM 359616109 0 -30,936 -100.00 0 -100.00
2022-08-15 2022-06-30 13F FULCRUM THERAPEUTICS COM 359616109 30,936 567 1.87 152 -78.83 0.0008
2022-05-16 2022-03-31 13F FULCRUM THERAPEUTICS COM 359616109 30,369 11,140 57.93 718 111.18 0.0031
2022-02-14 2021-12-31 13F FULCRUM THERAPEUTICS COM 359616109 19,229 19,229 340 0.0009
2020-08-14 2020-06-30 13F FULCRUM THERAPEUTICS COM 359616109 0 -13,878 -100.00 0 -100.00
2020-05-15 2020-03-31 13F FULCRUM THERAPEUTICS COM 359616109 13,878 13,878 166 0.0042
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
(%)
2025-08-27 2025-03-31 13F/A FULCRUM THERAPEUTICS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-15 2025-03-31 13F FULCRUM THERAPEUTICS COM Call 0 0 n/a n/a n/a
2025-02-14 2024-12-31 13F FULCRUM THERAPEUTICS COM Call 57,900 0.00 272 32.04 n/a n/a n/a
2024-11-14 2024-09-30 13F FULCRUM THERAPEUTICS COM Call 57,900 -52.35 207 -72.64 n/a n/a n/a
2024-08-14 2024-06-30 13F FULCRUM THERAPEUTICS COM Call 121,500 504.48 753 298.41 n/a n/a n/a
2024-05-15 2024-03-31 13F FULCRUM THERAPEUTICS COM Call 20,100 190 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.