Legend Biotech Corporation - Depositary Receipt (Common Stock)
US ˙ NasdaqGS ˙ US52490G1022

SecurityLEGN / Legend Biotech Corporation - Depositary Receipt (Common Stock)
InstitutionSimplex Trading, Llc
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Simplex Trading, Llc ownership in LEGN / Legend Biotech Corporation - Depositary Receipt (Common Stock)

On May 14, 2026 - Simplex Trading, Llc filed a 13F-HR form disclosing ownership of 0 shares of Legend Biotech Corporation - Depositary Receipt (Common Stock) (US:LEGN) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 29,432 shares of Legend Biotech Corporation - Depositary Receipt (Common Stock). This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Simplex Trading, Llc has a history of taking positions in derivatives of the underlying security (LEGN) in the form of stock options. The firm currently holds call options representing 68,600 of underlying shares valued at $1,240,974 USD and put options representing 6,700 of underlying shares valued at $121,203 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.

LEGN / Legend Biotech Corporation - Depositary Receipt (Common Stock) 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)
2026-05-14 2026-03-31 13F LEGEND BIOTECH COM 52490G102 0 -29,432 -100.00 0 -100.00
2026-02-11 2025-12-31 13F LEGEND BIOTECH COM 52490G102 29,432 29,432 640 0.0004
2025-11-12 2025-09-30 13F LEGEND BIOTECH COM 52490G102 0 -10,371 -100.00 0 0.0000
2025-08-05 2025-06-30 13F LEGEND BIOTECH COM 52490G102 10,371 1,847 21.67 0 0.0002
2025-05-12 2025-03-31 13F LEGEND BIOTECH COM 52490G102 8,524 -1,786 -17.32 0 0.0002
2025-02-11 2024-12-31 13F LEGEND BIOTECH COM 52490G102 10,310 10,310 0 0.0002
2024-11-08 2024-09-30 13F LEGEND BIOTECH COM 52490G102 0 -6,151 -100.00 0 0.0000
2024-07-25 2024-06-30 13F LEGEND BIOTECH COM 52490G102 6,151 6,151 0 0.0002
2024-04-25 2024-03-31 13F LEGEND BIOTECH COM 52490G102 0 -704 -100.00 0 0.0000
2024-02-02 2023-12-31 13F LEGEND BIOTECH COM 52490G102 704 704 0 0.0000
2022-08-03 2022-06-30 13F LEGEND BIOTECH COM 52490G102 0 -1,681 -100.00 0 -100.00
2022-05-02 2022-03-31 13F LEGEND BIOTECH COM 52490G102 1,681 -322 -16.08 61 -26.51 0.0001
2022-02-04 2021-12-31 13F LEGEND BIOTECH COM 52490G102 2,003 0 0.00 83 0.00 0.0001
2021-10-28 2021-09-30 13F LEGEND BIOTECH COM 52490G102 2,003 0 0.00 83 1.22 0.0001
2021-08-12 2021-06-30 13F LEGEND BIOTECH COM 52490G102 2,003 1,984 10,442.11 82 0.0001
2021-04-26 2021-03-31 13F LEGEND BIOTECH COM 52490G102 19 19 0 0.0000
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
(%)
2026-05-14 2026-03-31 13F LEGEND BIOTECH CALL Call 68,600 476.47 1,241 380.62 n/a n/a n/a
2026-02-11 2025-12-31 13F LEGEND BIOTECH CALL Call 11,900 -68.01 259 25,700.00 n/a n/a n/a
2025-11-12 2025-09-30 13F LEGEND BIOTECH CALL Call 37,200 -22.82 1 0.00 n/a n/a n/a
2025-08-05 2025-06-30 13F LEGEND BIOTECH CALL Call 48,200 239.44 2 n/a n/a n/a
2025-05-12 2025-03-31 13F LEGEND BIOTECH CALL Call 14,200 330.30 0 n/a n/a n/a
2025-02-11 2024-12-31 13F LEGEND BIOTECH CALL Call 3,300 -34.00 0 n/a n/a n/a
2024-11-08 2024-09-30 13F LEGEND BIOTECH CALL Call 5,000 -61.83 0 n/a n/a n/a
2024-07-25 2024-06-30 13F LEGEND BIOTECH CALL Call 13,100 -72.65 1 -100.00 n/a n/a n/a
2024-04-25 2024-03-31 13F LEGEND BIOTECH CALL Call 47,900 -5.89 3 -33.33 n/a n/a n/a
2024-02-02 2023-12-31 13F LEGEND BIOTECH CALL Call 50,900 307.20 3 n/a n/a n/a
2023-11-01 2023-09-30 13F LEGEND BIOTECH CALL Call 12,500 -52.29 1 -100.00 n/a n/a n/a
2023-08-04 2023-06-30 13F LEGEND BIOTECH CALL Call 26,200 -12.67 2 0.00 n/a n/a n/a
2023-04-27 2023-03-31 13F LEGEND BIOTECH CALL Call 30,000 -22.88 1 0.00 n/a n/a n/a
2023-02-02 2022-12-31 13F LEGEND BIOTECH CALL Call 38,900 -33.05 2 -99.96 n/a n/a n/a
2022-11-04 2022-09-30 13F LEGEND BIOTECH CALL Call 58,100 -1.36 2,370 -26.83 n/a n/a n/a
2022-08-03 2022-06-30 13F LEGEND BIOTECH CALL Call 58,900 627.16 3,239 1,001.70 n/a n/a n/a
2022-05-02 2022-03-31 13F LEGEND BIOTECH CALL Call 8,100 406.25 294 297.30 n/a n/a n/a
2022-02-23 2021-12-31 13F/A LEGEND BIOTECH CALL Call 1,600 700.00 74 825.00 n/a n/a n/a
2022-02-04 2021-12-31 13F LEGEND BIOTECH CALL Call 200 8 n/a n/a n/a
2021-10-28 2021-09-30 13F LEGEND BIOTECH CALL Call 200 0.00 8 0.00 n/a n/a n/a
2021-08-12 2021-06-30 13F LEGEND BIOTECH CALL Call 200 9,900.00 8 60.00 n/a n/a n/a
2021-04-26 2021-03-31 13F LEGEND BIOTECH CALL Call 2 -99.00 5 -37.50 n/a n/a n/a
2021-02-02 2020-12-31 13F LEGEND BIOTECH CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-10-14 2020-09-30 13F LEGEND BIOTECH CALL Call 2 0 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
(%)
2026-05-14 2026-03-31 13F LEGEND BIOTECH PUT Put 6,700 -81.79 121 -84.87 n/a n/a n/a
2026-02-11 2025-12-31 13F LEGEND BIOTECH PUT Put 36,800 67.27 800 n/a n/a n/a
2025-11-12 2025-09-30 13F LEGEND BIOTECH PUT Put 22,000 10.55 1 n/a n/a n/a
2025-08-05 2025-06-30 13F LEGEND BIOTECH PUT Put 19,900 22.09 1 n/a n/a n/a
2025-05-12 2025-03-31 13F LEGEND BIOTECH PUT Put 16,300 -39.18 1 n/a n/a n/a
2025-02-11 2024-12-31 13F LEGEND BIOTECH PUT Put 26,800 25.23 1 -100.00 n/a n/a n/a
2024-11-08 2024-09-30 13F LEGEND BIOTECH PUT Put 21,400 -32.28 1 0.00 n/a n/a n/a
2024-07-25 2024-06-30 13F LEGEND BIOTECH PUT Put 31,600 -27.52 1 -50.00 n/a n/a n/a
2024-04-25 2024-03-31 13F LEGEND BIOTECH PUT Put 43,600 592.06 2 n/a n/a n/a
2024-02-02 2023-12-31 13F LEGEND BIOTECH PUT Put 6,300 117.24 0 n/a n/a n/a
2023-11-01 2023-09-30 13F LEGEND BIOTECH PUT Put 2,900 -12.12 0 n/a n/a n/a
2023-08-04 2023-06-30 13F LEGEND BIOTECH PUT Put 3,300 73.68 0 n/a n/a n/a
2023-04-27 2023-03-31 13F LEGEND BIOTECH PUT Put 1,900 -63.46 0 n/a n/a n/a
2023-02-02 2022-12-31 13F LEGEND BIOTECH PUT Put 5,200 8.33 0 -100.00 n/a n/a n/a
2022-11-04 2022-09-30 13F LEGEND BIOTECH PUT Put 4,800 -62.79 195 -72.50 n/a n/a n/a
2022-08-03 2022-06-30 13F LEGEND BIOTECH PUT Put 12,900 -48.61 709 -22.26 n/a n/a n/a
2022-05-02 2022-03-31 13F LEGEND BIOTECH PUT Put 25,100 660.61 912 496.08 n/a n/a n/a
2022-02-23 2021-12-31 13F/A LEGEND BIOTECH PUT Put 3,300 135.71 153 163.79 n/a n/a n/a
2022-02-04 2021-12-31 13F LEGEND BIOTECH PUT Put 1,400 58 n/a n/a n/a
2021-10-28 2021-09-30 13F LEGEND BIOTECH PUT Put 1,400 0.00 58 1.75 n/a n/a n/a
2021-08-12 2021-06-30 13F LEGEND BIOTECH PUT Put 1,400 69,900.00 57 1,040.00 n/a n/a n/a
2021-04-26 2021-03-31 13F LEGEND BIOTECH PUT Put 2 100.00 5 -91.23 n/a n/a n/a
2021-02-02 2020-12-31 13F LEGEND BIOTECH PUT Put 1 0 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.