ImmunityBio, Inc.
US ˙ NasdaqGS ˙ US45256X1037

SecurityIBRX / ImmunityBio, Inc.
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership305,578 shares
Latest Disclosed Value $ 2,343,784
Citadel Advisors Llc ownership in IBRX / ImmunityBio, Inc.

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 305,578 shares of ImmunityBio, Inc. (US:IBRX) valued at $2,343,783 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 704,574 shares of ImmunityBio, Inc.. This represents a change in shares of -56.63% during the quarter. The current value of the position is $2,114,600 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (IBRX) in the form of stock options. The firm currently holds call options representing 2,876,200 of underlying shares valued at $22,060,454 USD and put options representing 1,954,100 of underlying shares valued at $14,987,947 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.

IBRX / ImmunityBio, 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 IMMUNITYBIO COM 45256X103 305,578 -398,996 -56.63 2,344 67.96 0.0004
2026-02-17 2025-12-31 13F IMMUNITYBIO COM 45256X103 704,574 -426,174 -37.69 1,395 -49.84 0.0002
2025-11-14 2025-09-30 13F IMMUNITYBIO COM 45256X103 1,130,748 344,523 43.82 2,782 34.02 0.0004
2025-08-14 2025-06-30 13F IMMUNITYBIO COM 45256X103 786,225 307,902 64.37 2,076 44.20 0.0004
2025-05-15 2025-03-31 13F IMMUNITYBIO COM 45256X103 478,323 406,572 566.64 1,440 686.34 0.0003
2025-02-14 2024-12-31 13F IMMUNITYBIO COM 45256X103 71,751 -244,359 -77.30 184 -84.43 0.0000
2024-11-14 2024-09-30 13F IMMUNITYBIO COM 45256X103 316,110 99,132 45.69 1,176 -14.30 0.0002
2024-08-14 2024-06-30 13F IMMUNITYBIO COM 45256X103 216,978 216,930 451,937.50 1,371 0.0003
2024-05-15 2024-03-31 13F IMMUNITYBIO COM 45256X103 48 48 0 0.0000
2023-08-14 2023-06-30 13F IMMUNITYBIO COM 45256X103 0 -244,721 -100.00 0 -100.00
2023-05-15 2023-03-31 13F IMMUNITYBIO COM 45256X103 244,721 91,701 59.93 445 -42.58 0.0001
2023-02-14 2022-12-31 13F IMMUNITYBIO COM 45256X103 153,020 -395,134 -72.08 776 -71.55 0.0002
2022-11-14 2022-09-30 13F IMMUNITYBIO COM 45256X103 548,154 -229,827 -29.54 2,724 -5.87 0.0006
2022-08-15 2022-06-30 13F IMMUNITYBIO COM 45256X103 777,981 438,120 128.91 2,894 51.76 0.0007
2022-05-16 2022-03-31 13F IMMUNITYBIO COM 45256X103 339,861 309,722 1,027.65 1,907 942.08 0.0004
2022-02-14 2021-12-31 13F IMMUNITYBIO COM 45256X103 30,139 -134,746 -81.72 183 -88.61 0.0000
2021-11-15 2021-09-30 13F IMMUNITYBIO Cmn 45256X103 164,885 128,380 351.68 1,606 208.25 0.0003
2021-08-16 2021-06-30 13F IMMUNITYBIO COM 45256X103 36,505 25,969 246.48 521 108.40 0.0001
2021-05-21 2021-03-31 13F/A-1 IMMUNITYBIO COM 45256X103 10,536 10,536 -71.14 250 -52.02 0.0001
2021-05-17 2021-03-31 13F IMMUNITYBIO COM 45256X103 10,536 10,536 250 0.0001
2021-02-16 2020-12-31 13F NANTKWEST COM 63016Q102 0 -306,067 -100.00 0 -100.00
2020-11-16 2020-09-30 13F NANTKWEST COM 63016Q102 306,067 -204,731 -40.08 2,123 -66.16 0.0006
2020-08-14 2020-06-30 13F NANTKWEST Cmn 63016Q102 510,798 510,798 66.89 6,273 195.48 0.0022
2020-02-14 2019-12-31 13F NANTKWEST Cmn 63016Q102 0 -14,950 -100.00 0 -100.00
2019-11-14 2019-09-30 13F NANTKWEST Cmn 63016Q102 14,950 -31,554 -67.85 18 -61.70 0.0000
2019-08-14 2019-06-30 13F NANTKWEST Cmn 63016Q102 46,504 13,833 42.34 47 -9.62 0.0000
2019-05-15 2019-03-31 13F NANTKWEST Cmn 63016Q102 32,671 5,618 20.77 52 67.74 0.0000
2019-02-14 2018-12-31 13F NANTKWEST Cmn 63016Q102 27,053 -1,402 -4.93 31 -70.48 0.0000
2018-11-13 2018-09-30 13F NANTKWEST Cmn 63016Q102 28,455 13,792 94.06 105 133.33 0.0000
2018-08-14 2018-06-30 13F/A-1 NANTKWEST Cmn 63016Q102 14,663 -9,491 -39.29 45 -52.13 0.0000
2018-08-10 2018-06-30 13F NANTKWEST Cmn 63016Q102 14,663 -9,491 45
2018-05-14 2018-03-31 13F/A-1 NANTKWEST Cmn 63016Q102 24,154 24,154 64.73 94 108.89 0.0001
2018-05-11 2018-03-31 13F NANTKWEST Cmn 63016Q102 24,154 24,154 94
2017-05-12 2017-03-31 13F NANTKWEST Cmn 63016Q102 0 -18,477 -100.00 0 -100.00
2017-02-10 2016-12-31 13F NANTKWEST Cmn 63016Q102 18,477 18,477 106 0.0001
2017-01-31 2016-03-31 13F/A-1 NANTKWEST Cmn 63016Q102 0 -14,722 -100.00 0 -100.00
2017-01-31 2015-12-31 13F/A-1 NANTKWEST Cmn 63016Q102 14,722 -115,682 -88.71 255 -82.93 0.0003
2016-02-12 2015-12-31 13F NANTKWEST Cmn 63016Q102 14,722 255
2015-11-16 2015-09-30 13F NANTKWEST Cmn 63016Q102 130,404 130,404 1,494 0.0014
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 IMMUNITYBIO COM Call 2,876,200 743.46 22,060 3,168.15 n/a n/a n/a
2026-02-17 2025-12-31 13F IMMUNITYBIO COM Call 341,000 -35.72 675 -48.28 n/a n/a n/a
2025-11-14 2025-09-30 13F IMMUNITYBIO COM Call 530,500 20.98 1,305 12.79 n/a n/a n/a
2025-08-14 2025-06-30 13F IMMUNITYBIO COM Call 438,500 13.19 1,158 -0.77 n/a n/a n/a
2025-05-15 2025-03-31 13F IMMUNITYBIO COM Call 387,400 58.77 1,166 86.86 n/a n/a n/a
2025-02-14 2024-12-31 13F IMMUNITYBIO COM Call 244,000 50.62 625 3.65 n/a n/a n/a
2024-11-14 2024-09-30 13F IMMUNITYBIO COM Call 162,000 -52.00 603 -71.78 n/a n/a n/a
2024-08-14 2024-06-30 13F IMMUNITYBIO COM Call 337,500 -23.88 2,133 -10.42 n/a n/a n/a
2024-05-15 2024-03-31 13F IMMUNITYBIO COM Call 443,400 364.78 2,381 398.12 n/a n/a n/a
2024-02-14 2023-12-31 13F IMMUNITYBIO COM Call 95,400 -43.38 479 68.31 n/a n/a n/a
2023-11-14 2023-09-30 13F IMMUNITYBIO COM Call 168,500 -38.21 285 -62.53 n/a n/a n/a
2023-08-14 2023-06-30 13F IMMUNITYBIO COM Call 272,700 2.44 758 56.61 n/a n/a n/a
2023-05-15 2023-03-31 13F IMMUNITYBIO COM Call 266,200 -12.84 484 -68.73 n/a n/a n/a
2023-02-14 2022-12-31 13F IMMUNITYBIO COM Call 305,400 47.97 1,548 50.88 n/a n/a n/a
2022-11-14 2022-09-30 13F IMMUNITYBIO COM Call 206,400 48.17 1,026 98.07 n/a n/a n/a
2022-08-15 2022-06-30 13F IMMUNITYBIO COM Call 139,300 56.69 518 3.81 n/a n/a n/a
2022-05-16 2022-03-31 13F IMMUNITYBIO COM Call 88,900 -8.82 499 -15.85 n/a n/a n/a
2022-02-14 2021-12-31 13F IMMUNITYBIO COM Call 97,500 32.11 593 -17.52 n/a n/a n/a
2021-11-15 2021-09-30 13F IMMUNITYBIO Cmn Call 73,800 -34.75 719 -55.48 n/a n/a n/a
2021-08-16 2021-06-30 13F IMMUNITYBIO COM Call 113,100 7.41 1,615 -35.40 n/a n/a n/a
2021-05-21 2021-03-31 13F/A IMMUNITYBIO COM Call 105,300 16.61 2,500 107.64 n/a n/a n/a
2021-05-17 2021-03-31 13F IMMUNITYBIO COM Call 105,300 2,500 n/a n/a n/a
2021-02-16 2020-12-31 13F NANTKWEST COM Call 90,300 4.39 1,204 100.67 n/a n/a n/a
2020-11-16 2020-09-30 13F NANTKWEST COM Call 86,500 -20.86 600 -55.29 n/a n/a n/a
2020-08-14 2020-06-30 13F NANTKWEST Cmn Call 109,300 183.16 1,342 1,109.01 n/a n/a n/a
2020-05-15 2020-03-31 13F NANTKWEST Cmn Call 38,600 250.91 111 164.29 n/a n/a n/a
2020-02-14 2019-12-31 13F NANTKWEST Cmn Call 11,000 -71.50 42 -62.16 n/a n/a n/a
2019-08-14 2019-06-30 13F NANTKWEST Cmn Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-15 2019-03-31 13F NANTKWEST Cmn Call 27,400 -33.17 43 -10.42 n/a n/a n/a
2019-02-14 2018-12-31 13F NANTKWEST Cmn Call 41,000 49.64 48 11.63 n/a n/a n/a
2018-08-14 2018-06-30 13F/A NANTKWEST Cmn Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-05-14 2018-03-31 13F/A NANTKWEST Cmn Call 12,000 47 n/a n/a n/a
2018-05-11 2018-03-31 13F NANTKWEST Cmn Call 12,000 47 n/a n/a n/a
2018-02-09 2017-12-31 13F NANTKWEST Cmn Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-09 2017-09-30 13F NANTKWEST Cmn Call 21,100 -30.36 116 -49.57 n/a n/a n/a
2017-08-11 2017-06-30 13F NANTKWEST Cmn Call 30,300 43.60 230 98.28 n/a n/a n/a
2017-02-10 2016-12-31 13F NANTKWEST Cmn Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-01-31 2016-09-30 13F/A NANTKWEST Cmn Call 15,900 -25.00 124 -6.06 n/a n/a n/a
2016-11-10 2016-09-30 13F NANTKWEST Cmn Call 15,900 124 n/a n/a n/a
2017-01-31 2016-06-30 13F/A NANTKWEST Cmn Call 21,200 33.33 132 6.45 n/a n/a n/a
2016-08-12 2016-06-30 13F NANTKWEST Cmn Call 21,200 132 n/a n/a n/a
2016-05-13 2016-03-31 13F NANTKWEST Cmn Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-01-31 2015-12-31 13F/A NANTKWEST Cmn Call 3,300 120.00 57 235.29 n/a n/a n/a
2016-02-12 2015-12-31 13F NANTKWEST Cmn Call 3,300 57 n/a n/a n/a
2015-11-16 2015-09-30 13F NANTKWEST Cmn Call 1,500 17 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 IMMUNITYBIO COM Put 1,954,100 212.06 14,988 1,109.60 n/a n/a n/a
2026-02-17 2025-12-31 13F IMMUNITYBIO COM Put 626,200 25.11 1,240 0.65 n/a n/a n/a
2025-11-14 2025-09-30 13F IMMUNITYBIO COM Put 500,500 20.43 1,231 12.22 n/a n/a n/a
2025-08-14 2025-06-30 13F IMMUNITYBIO COM Put 415,600 -13.97 1,097 -24.55 n/a n/a n/a
2025-05-15 2025-03-31 13F IMMUNITYBIO COM Put 483,100 -33.39 1,454 -21.66 n/a n/a n/a
2025-02-14 2024-12-31 13F IMMUNITYBIO COM Put 725,300 43.71 1,857 -1.12 n/a n/a n/a
2024-11-14 2024-09-30 13F IMMUNITYBIO COM Put 504,700 -0.75 1,877 -41.58 n/a n/a n/a
2024-08-14 2024-06-30 13F IMMUNITYBIO COM Put 508,500 -1.63 3,214 15.78 n/a n/a n/a
2024-05-15 2024-03-31 13F IMMUNITYBIO COM Put 516,900 44.83 2,776 54.94 n/a n/a n/a
2024-02-14 2023-12-31 13F IMMUNITYBIO COM Put 356,900 39.52 1,792 314.58 n/a n/a n/a
2023-11-14 2023-09-30 13F IMMUNITYBIO COM Put 255,800 22.16 432 -25.77 n/a n/a n/a
2023-08-14 2023-06-30 13F IMMUNITYBIO COM Put 209,400 147.81 582 280.39 n/a n/a n/a
2023-05-15 2023-03-31 13F IMMUNITYBIO COM Put 84,500 7.64 154 -61.46 n/a n/a n/a
2023-02-14 2022-12-31 13F IMMUNITYBIO COM Put 78,500 1.55 398 3.39 n/a n/a n/a
2022-11-14 2022-09-30 13F IMMUNITYBIO COM Put 77,300 7.21 384 43.28 n/a n/a n/a
2022-08-15 2022-06-30 13F IMMUNITYBIO COM Put 72,100 -22.72 268 -48.76 n/a n/a n/a
2022-05-16 2022-03-31 13F IMMUNITYBIO COM Put 93,300 -56.56 523 -59.95 n/a n/a n/a
2022-02-14 2021-12-31 13F IMMUNITYBIO COM Put 214,800 -12.72 1,306 -45.52 n/a n/a n/a
2021-11-15 2021-09-30 13F IMMUNITYBIO Cmn Put 246,100 1.95 2,397 -30.46 n/a n/a n/a
2021-08-16 2021-06-30 13F IMMUNITYBIO COM Put 241,400 -10.49 3,447 -46.17 n/a n/a n/a
2021-05-21 2021-03-31 13F/A IMMUNITYBIO COM Put 269,700 48.43 6,403 164.37 n/a n/a n/a
2021-05-17 2021-03-31 13F IMMUNITYBIO COM Put 269,700 6,403 n/a n/a n/a
2021-02-16 2020-12-31 13F NANTKWEST COM Put 181,700 537.54 2,422 1,123.23 n/a n/a n/a
2020-11-16 2020-09-30 13F NANTKWEST COM Put 28,500 -16.67 198 -52.86 n/a n/a n/a
2020-08-14 2020-06-30 13F NANTKWEST Cmn Put 34,200 46.78 420 1,650.00 n/a n/a n/a
2019-08-14 2019-06-30 13F NANTKWEST Cmn Put 23,300 90.98 24 26.32 n/a n/a n/a
2019-05-15 2019-03-31 13F NANTKWEST Cmn Put 12,200 -47.64 19 -20.83 n/a n/a n/a
2016-11-10 2016-09-30 13F NANTKWEST Cmn Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-01-31 2016-06-30 13F/A NANTKWEST Cmn Put 12,100 75 n/a n/a n/a
2016-08-12 2016-06-30 13F NANTKWEST Cmn Put 12,100 75 n/a n/a n/a
2017-01-31 2016-03-31 13F/A NANTKWEST Cmn Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-01-31 2015-12-31 13F/A NANTKWEST Cmn Put 2,200 -21.43 38 18.75 n/a n/a n/a
2016-02-12 2015-12-31 13F NANTKWEST Cmn Put 2,200 38 n/a n/a n/a
2015-11-16 2015-09-30 13F NANTKWEST Cmn Put 2,800 32 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.