Core Scientific, Inc.

SecurityCORZ / Core Scientific, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership524,005 shares
Latest Disclosed Value $ 7,839,115
Citigroup Inc ownership in CORZ / Core Scientific, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 524,005 shares of Core Scientific, Inc. (US:CORZ) valued at $7,839,115 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,356,663 shares of Core Scientific, Inc.. This represents a change in shares of -77.76% during the quarter. The current value of the position is $15,159,465 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (CORZ) in the form of stock options. The firm currently holds call options representing 764,000 of underlying shares valued at $11,429,440 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.

CORZ / Core Scientific, 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)
2026-05-11 2026-03-31 13F CORE SCIENTIFIC INC COM 21874A106 524,005 -1,832,658 -77.76 7,839 -77.15 0.0017
2026-02-13 2025-12-31 13F CORE SCIENTIFIC INC COM 21874A106 2,356,663 944,846 66.92 34,313 35.48 0.0151
2025-11-10 2025-09-30 13F CORE SCIENTIFIC INC COM 21874A106 1,411,817 -404,753 -22.28 25,328 -18.32 0.0113
2025-08-11 2025-06-30 13F CORE SCIENTIFIC INC COM 21874A106 1,816,570 1,243,293 216.87 31,009 647.18 0.0152
2025-05-12 2025-03-31 13F CORE SCIENTIFIC INC COM 21874A106 573,277 -27,667 -4.60 4,151 -50.85 0.0021
2025-02-12 2024-12-31 13F CORE SCIENTIFIC INC COM 21874A106 600,944 439,734 272.77 8,443 341.81 0.0050
2024-11-12 2024-09-30 13F CORE SCIENTIFIC INC COM 21874A106 161,210 67,486 72.01 1,912 119.40 0.0011
2024-08-12 2024-06-30 13F CORE SCIENTIFIC INC COM 21874A106 93,724 81,769 683.97 872 1,973.81 0.0006
2024-05-10 2024-03-31 13F CORE SCIENTIFIC INC COM 21874A106 11,955 11,955 42 0.0000
2023-05-11 2023-03-31 13F CORE SCIENTIFIC COMMON STOCK 21873J108 0 -1,830 -100.00 0 0.0000
2023-02-09 2022-12-31 13F CORE SCIENTIFIC COMMON STOCK 21873J108 1,830 -2,237 -55.00 0 -100.00 0.0000
2022-11-10 2022-09-30 13F CORE SCIENTIFIC COMMON STOCK 21873J108 4,067 -16,567 -80.29 5 -83.87 0.0000
2022-08-10 2022-06-30 13F CORE SCIENTIFIC COMMON STOCK 21873J108 20,634 20,634 31 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
(%)
2026-05-11 2026-03-31 13F CORE SCIENTIFIC INC COM Call 764,000 -83.28 11,429 -82.82 n/a n/a n/a
2026-02-13 2025-12-31 13F CORE SCIENTIFIC INC COM Call 4,569,600 -7.99 66,533 -25.32 n/a n/a n/a
2025-11-10 2025-09-30 13F CORE SCIENTIFIC INC COM Call 4,966,200 32.90 89,094 39.67 n/a n/a n/a
2025-08-11 2025-06-30 13F CORE SCIENTIFIC INC COM Call 3,736,900 69.32 63,789 299.22 n/a n/a n/a
2025-05-12 2025-03-31 13F CORE SCIENTIFIC INC COM Call 2,207,000 292.29 15,979 102.15 n/a n/a n/a
2025-02-12 2024-12-31 13F CORE SCIENTIFIC INC COM Call 562,600 -55.56 7,905 -47.36 n/a n/a n/a
2024-11-12 2024-09-30 13F CORE SCIENTIFIC INC COM Call 1,266,100 261.74 15,016 361.29 n/a n/a n/a
2024-08-12 2024-06-30 13F CORE SCIENTIFIC INC COM Call 350,000 15.55 3,255 203.64 n/a n/a n/a
2024-05-10 2024-03-31 13F CORE SCIENTIFIC INC COM Call 302,900 1,072 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
(%)
2026-05-11 2026-03-31 13F CORE SCIENTIFIC INC COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-13 2025-12-31 13F CORE SCIENTIFIC INC COM Put 1,360,000 580.00 19,802 451.87 n/a n/a n/a
2025-11-10 2025-09-30 13F CORE SCIENTIFIC INC COM Put 200,000 3,588 n/a n/a n/a
2025-02-12 2024-12-31 13F CORE SCIENTIFIC INC COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-12 2024-09-30 13F CORE SCIENTIFIC INC COM Put 747,700 8,868 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.