PROSHARES ULTRASHORT 20+Y TR (TBT) Top Institutional Shareholders
PROSHARES ULTRASHORT 20+Y TR (TBT) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $74.39M in TBT holdings during the latest filing period.
Castleknight Management Lp is currently the largest disclosed institutional shareholder of TBT tracked by InsiderSet, reporting ownership valued at approximately $24.05M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $24.01M, representing an estimated loss of -0.17% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 90% of the total disclosed TBT value among the investors covered in this analysis. Major shareholders include Castleknight Management Lp, Susquehanna International Group, Llp, Mariner, Llc, and several other long-term asset managers with concentrated positions in PROSHARES ULTRASHORT 20+Y TR (TBT).
This page ranks the largest institutional TBT shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
50
Total Reported Value
$74.39M
Largest Holder
Castleknight Management Lp
Largest Position
$24.05M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
66
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Castleknight Management Lp | 1.13% | 684,449 | $24,051,538 | $24,010,471 | -$41,067 | -0.17% | |
| Susquehanna International Group, Llp | 0.03% | 639,882 | $22,485,454 | $22,447,061 | -$38,393 | -0.17% | |
| Mariner, Llc | 0.00% | 113,965 | $4,004,730 | $3,997,892 | -$6,838 | -0.17% | |
| Citadel Advisors Llc | 0.00% | 110,559 | $3,885,043 | $3,878,410 | -$6,633 | -0.17% | |
| J. Safra Sarasin Holding Ag | 0.05% | 79,292 | $2,786,321 | $2,781,563 | -$4,758 | -0.17% | |
| Jane Street Group, Llc | 0.00% | 69,842 | $2,454,248 | $2,450,057 | -$4,191 | -0.17% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 64,400 | $2,263,016 | $2,259,152 | -$3,864 | -0.17% |
| Jefferies Financial Group Inc. | 0.02% | 52,821 | $1,856,130 | $1,852,961 | -$3,169 | -0.17% | |
| Independent Financial Group, Llc | 0.02% | 48,827 | $1,564,768 | $1,712,851 | +$148,083 | +9.46% | |
| Virtue Capital Management, Llc | 0.20% | 37,502 | $1,314,574 | $1,315,570 | +$996 | +0.08% | |
| Verity Asset Management, Inc. | 0.37% | 24,966 | $877,305 | $875,807 | -$1,498 | -0.17% | |
| Goldman Sachs Group Inc | 0.00% | 24,492 | $860,642 | $859,179 | -$1,463 | -0.17% | |
| Quadrature Capital Ltd | 0.01% | 23,921 | $840,584 | $839,149 | -$1,435 | -0.17% | |
| Camelot Technology Advisors, Inc. | 0.60% | 23,083 | $811,139 | $809,752 | -$1,387 | -0.17% | |
| Imc-Chicago, Llc | 0.01% | 12,536 | $440,515 | $439,763 | -$752 | -0.17% | |
| Two Sigma Securities, Llc | 0.05% | 11,807 | $414,898 | $414,190 | -$708 | -0.17% | |
| Auour Investments Llc | 0.13% | 11,565 | $406,394 | $405,700 | -$694 | -0.17% | |
| Royal Bank Of Canada | 0.00% | 11,209 | $394,000 | $393,212 | -$788 | -0.20% | |
| Cerity Partners Llc | 0.00% | 11,144 | $391,598 | $390,932 | -$666 | -0.17% | |
| Capital Investment Counsel, Inc | 0.04% | 8,600 | $302,204 | $301,688 | -$516 | -0.17% | |
| Synergy Asset Management, Llc | 0.03% | 8,575 | $301,326 | $300,811 | -$515 | -0.17% | |
| Group One Trading Llc | 0.01% | 8,231 | $289,237 | $288,743 | -$494 | -0.17% | |
| Essex Llc | 0.05% | 7,796 | $273,951 | $273,484 | -$467 | -0.17% | |
| Weinberger Asset Management, Inc | 0.10% | 7,390 | $259,685 | $259,241 | -$444 | -0.17% | |
| Bison Wealth, Llc | 0.02% | 6,487 | $236,451 | $227,564 | -$8,887 | -3.76% | |
| Hourglass Capital, Llc | 0.04% | 5,700 | $200,298 | $199,956 | -$342 | -0.17% | |
| Gables Capital Management Inc. | 0.07% | 5,018 | $176,333 | $176,031 | -$302 | -0.17% | |
| Ubs Group Ag | 0.00% | 2,450 | $86,093 | $85,946 | -$147 | -0.17% | |
| Smartleaf Asset Management Llc | 0.00% | 993 | $34,785 | $34,834 | +$49 | +0.14% | |
| Qube Research & Technologies Ltd | 0.00% | 706 | $24,809 | $24,766 | -$43 | -0.17% | |
| Shp Wealth Management | 0.00% | 567 | $19,909 | $19,890 | -$19 | -0.09% | |
| Merkkuri Wealth Advisors Llc | 0.01% | 560 | $19,690 | $19,645 | -$45 | -0.23% | |
| Vermillion Wealth Management, Inc. | 0.01% | 535 | $18,800 | $18,768 | -$32 | -0.17% | |
| Brown Brothers Harriman & Co | 0.00% | 256 | $8,996 | $8,980 | -$16 | -0.17% | |
| Bank Of Montreal | 0.00% | 240 | $8,434 | $8,419 | -$15 | -0.18% | |
| Us Bancorp \De\ | 0.00% | 150 | $5,271 | $5,262 | -$9 | -0.17% | |
| Ascentis Wealth Management, Llc | 0.00% | 126 | $4,427 | $4,420 | -$7 | -0.16% | |
| Harbour Investments, Inc. | 0.00% | 81 | $2,852 | $2,841 | -$11 | -0.37% | |
| Aptus Capital Advisors, Llc | 0.00% | 81 | $2,846 | $2,841 | -$5 | -0.16% | |
| Trust Co Of Toledo Na | 0.00% | 80 | $2,811 | $2,806 | -$5 | -0.16% | |
| Geneos Wealth Management Inc. | 0.00% | 50 | $1,757 | $1,754 | -$3 | -0.17% | |
| Northwestern Mutual Wealth Management Co | 0.00% | 36 | $1,265 | $1,263 | -$2 | -0.17% | |
| North Star Investment Management Corp. | 0.00% | 27 | $949 | $947 | -$2 | -0.19% | |
| Corecap Advisors, Llc | 0.00% | 23 | $809 | $807 | -$2 | -0.27% | |
| Assetmark, Inc | 0.00% | 22 | $773 | $772 | -$1 | -0.16% | |
| Farther Finance Advisors, Llc | 0.00% | 3 | $105 | $105 | +$0 | +0.23% | |
| Morgan Stanley | 0.00% | 1 | $63 | $35 | -$28 | -44.32% | |
| Huntington National Bank | 0.00% | 1 | $35 | $35 | +$0 | +0.23% | |
| Natixis | 0.00% | 1 | $35 | $35 | +$0 | +0.23% | |
| Tower Research Capital Llc (Trc) | 0.00% | 1 | $35 | $35 | +$0 | +0.23% |
Frequently asked questions about TBT
Who owns the most TBT stock?
The largest holders of TBT are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for PROSHARES ULTRASHORT 20+Y TR (TBT).
Is TBT widely held by superinvestors?
Many widely followed stocks like TBT appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly TBT is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.