ProShares Trust - ProShares UltraShort Bitcoin ETF
US ˙ ARCA

SecuritySBIT / ProShares Trust - ProShares UltraShort Bitcoin ETF
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership43,034 shares
Latest Disclosed Value $ 2,451,647
Citadel Advisors Llc ownership in SBIT / ProShares Trust - ProShares UltraShort Bitcoin ETF

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 43,034 shares of ProShares Trust - ProShares UltraShort Bitcoin ETF (US:SBIT) valued at $2,451,647 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 49,856 shares of ProShares Trust - ProShares UltraShort Bitcoin ETF. This represents a change in shares of -13.68% during the quarter. The current value of the position is $2,922,009 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (SBIT) in the form of stock options. The firm currently holds call options representing 61,400 of underlying shares valued at $3,497,958 USD and put options representing 38,500 of underlying shares valued at $2,193,345 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.

SBIT / ProShares Trust - ProShares UltraShort Bitcoin ETF 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 PROSHARES TR ULTRASHORT BITCO 74349Y563 43,034 -6,822 -13.68 2,452 11.97 0.0003
2026-02-17 2025-12-31 13F PROSHARES TR ULTRASHORT BITCO 74349Y563 49,856 49,856 2,190 0.0003
2025-11-14 2025-09-30 13F PROSHARES TR ULTRASHORT BITCO 74349Y563 0 -52,745 -100.00 0 -100.00
2025-08-14 2025-06-30 13F PROSHARES TR ULTRASHORT BITCO 74349Y563 52,745 52,745 1,826 0.0003
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 PROSHARES TR ULTRASHORT BITCO Call 61,400 -44.88 3,498 -28.52 n/a n/a n/a
2026-02-17 2025-12-31 13F PROSHARES TR ULTRASHORT BITCO Call 111,400 18.86 4,893 79.79 n/a n/a n/a
2025-11-14 2025-09-30 13F PROSHARES TR ULTRASHORT BITCO Call 93,720 254.46 2,722 197.38 n/a n/a n/a
2025-08-14 2025-06-30 13F PROSHARES TR ULTRASHORT BITCO Call 26,440 915 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 PROSHARES TR ULTRASHORT BITCO Put 38,500 -87.64 2,193 -83.98 n/a n/a n/a
2026-02-17 2025-12-31 13F PROSHARES TR ULTRASHORT BITCO Put 311,600 1,372.59 13,685 2,128.83 n/a n/a n/a
2025-11-14 2025-09-30 13F PROSHARES TR ULTRASHORT BITCO Put 21,160 16.39 614 -2.38 n/a n/a n/a
2025-08-14 2025-06-30 13F PROSHARES TR ULTRASHORT BITCO Put 18,180 629 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.