BOUNDLESS BIO INC (BOLD) Top Institutional Shareholders
BOUNDLESS BIO INC (BOLD) 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 $9.21M in BOLD holdings during the latest filing period.
Fmr Llc is currently the largest disclosed institutional shareholder of BOLD tracked by InsiderSet, reporting ownership valued at approximately $2.96M 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 $3.77M, representing an estimated gain of +27.27% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 90% of the total disclosed BOLD value among the investors covered in this analysis. Major shareholders include Fmr Llc, Citadel Advisors Llc, Sectoral Asset Management Inc, and several other long-term asset managers with concentrated positions in BOUNDLESS BIO INC (BOLD).
This page ranks the largest institutional BOLD 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
35
Total Reported Value
$9.21M
Largest Holder
Fmr Llc
Largest Position
$2.96M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
42
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Fmr Llc | 0.00% | 2,695,455 | $2,965,000 | $3,773,637 | +$808,637 | +27.27% | |
| Citadel Advisors Llc | 0.00% | 1,342,131 | $1,476,344 | $1,878,983 | +$402,639 | +27.27% | |
| Sectoral Asset Management Inc | 0.62% | 678,574 | $746,431 | $950,004 | +$203,573 | +27.27% | |
| Stonepine Capital Management, Llc | 0.58% | 597,682 | $657,450 | $836,755 | +$179,305 | +27.27% | |
| Vanguard Capital Management Llc | 0.00% | 597,192 | $656,911 | $836,069 | +$179,158 | +27.27% | |
| Wellington Management Group Llp | 0.00% | 556,233 | $611,856 | $778,726 | +$166,870 | +27.27% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 399,000 | $438,900 | $558,600 | +$119,700 | +27.27% |
| Alyeska Investment Group, L.P. | 0.00% | 300,000 | $330,000 | $420,000 | +$90,000 | +27.27% | |
| Rbf Capital, Llc | 0.01% | 200,000 | $220,000 | $280,000 | +$60,000 | +27.27% | |
| Ensign Peak Advisors, Inc | 0.00% | 187,500 | $206,250 | $262,500 | +$56,250 | +27.27% | |
| Sio Capital Management, Llc | 0.03% | 163,679 | $180,047 | $229,151 | +$49,104 | +27.27% | |
| Geode Capital Management, Llc | 0.00% | 127,576 | $140,333 | $178,606 | +$38,273 | +27.27% | |
| Millennium Management Llc | 0.00% | 99,875 | $109,862 | $139,825 | +$29,963 | +27.27% | |
| Landscape Capital Management, L.L.C. | 0.01% | 85,792 | $94,370 | $120,109 | +$25,739 | +27.27% | |
| Blackrock, Inc. | 0.00% | 70,675 | $77,743 | $98,945 | +$21,202 | +27.27% | |
| Vanguard Fiduciary Trust Co | 0.00% | 65,136 | $71,650 | $91,190 | +$19,540 | +27.27% | |
| Bridgeway Capital Management, Llc | 0.00% | 50,500 | $55,550 | $70,700 | +$15,150 | +27.27% | |
| Walleye Capital Llc | 0.00% | 39,624 | $43,586 | $55,474 | +$11,888 | +27.27% | |
| Xtx Topco Ltd | 0.00% | 34,671 | $38,138 | $48,539 | +$10,401 | +27.27% | |
| Qube Research & Technologies Ltd | 0.00% | 17,492 | $19,241 | $24,489 | +$5,248 | +27.27% | |
| Squarepoint Ops Llc | 0.00% | 16,374 | $18,011 | $22,924 | +$4,913 | +27.28% | |
| State Street Corp | 0.00% | 15,962 | $17,558 | $22,347 | +$4,789 | +27.27% | |
| Morgan Stanley | 0.00% | 13,000 | $14,300 | $18,200 | +$3,900 | +27.27% | |
| Pure Financial Advisors, Llc | 0.00% | 10,100 | $11,110 | $14,140 | +$3,030 | +27.27% | |
| Citigroup Inc | 0.00% | 8,837 | $9,721 | $12,372 | +$2,651 | +27.27% | |
| Tower Research Capital Llc (Trc) | 0.00% | 2,371 | $2,608 | $3,319 | +$711 | +27.28% | |
| Vanguard Global Advisers, Llc | 0.00% | 429 | $472 | $601 | +$129 | +27.25% | |
| Bnp Paribas Financial Markets | 0.00% | 178 | $196 | $249 | +$53 | +27.14% | |
| Optiver Holding B.V. | 0.00% | 168 | $185 | $235 | +$50 | +27.14% | |
| Gsa Capital Partners Llp | 0.01% | 96,824 | $107 | $135,554 | +$135,447 | +126585.61% | |
| Acadian Asset Management Llc | 0.00% | 12,610 | $12 | $17,654 | +$17,642 | +147016.67% | |
| Cwm, Llc | 0.00% | 8 | $9 | $11 | +$2 | +24.44% | |
| Caitong International Asset Management Co., Ltd | 0.00% | 3 | $3 | $4 | +$1 | +40.00% | |
| Ubs Group Ag | 0.00% | 2 | $2 | $3 | +$1 | +40.00% | |
| Sbi Securities Co., Ltd. | 0.00% | 1 | $1 | $1 | +$0 | +40.00% |
Frequently asked questions about BOLD
Who owns the most BOLD stock?
The largest holders of BOLD 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 BOUNDLESS BIO INC (BOLD).
Is BOLD widely held by superinvestors?
Many widely followed stocks like BOLD appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly BOLD 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.