Wolfspeed, Inc.
US ˙ NYSE

SecurityWOLF / Wolfspeed, Inc.
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership1,044,862 shares
Latest Disclosed Value $ 17,052,148
Citadel Advisors Llc ownership in WOLF / Wolfspeed, Inc.

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 1,044,862 shares of Wolfspeed, Inc. (US:WOLF) valued at $17,052,148 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 402,766 shares of Wolfspeed, Inc.. This represents a change in shares of 159.42% during the quarter. The current value of the position is $64,436,640 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (WOLF) in the form of stock options. The firm currently holds call options representing 126,776 of underlying shares valued at $2,068,984 USD and put options representing 97,131 of underlying shares valued at $1,585,178 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.

WOLF / Wolfspeed, 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 WOLFSPEED COMMON STOCK 97785W106 1,044,862 642,096 159.42 17,052 143.18 0.0028
2026-02-17 2025-12-31 13F WOLFSPEED COMMON STOCK 97785W106 402,766 340,777 549.74 7,012 417.87 0.0011
2025-11-14 2025-09-30 13F WOLFSPEED COMMON STOCK 97785W106 61,989 61,989 1,355 0.0002
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 WOLFSPEED COMMON STOCK Call 126,776 95.52 2,069 83.33 n/a n/a n/a
2026-02-17 2025-12-31 13F WOLFSPEED COMMON STOCK Call 64,840 -3.17 1,129 -41.10 n/a n/a n/a
2025-11-14 2025-09-30 13F WOLFSPEED COMMON STOCK Call 66,965 1,915 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 WOLFSPEED COMMON STOCK Put 97,131 2.15 1,585 -4.23 n/a n/a n/a
2026-02-17 2025-12-31 13F WOLFSPEED COMMON STOCK Put 95,086 -43.19 1,655 -65.42 n/a n/a n/a
2025-11-14 2025-09-30 13F WOLFSPEED COMMON STOCK Put 167,361 4,787 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.