CABALETTA BIO INC (CABA) Institutional Shareholders
CABALETTA BIO INC (CABA) 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 $195.23M in CABA holdings during the latest filing period.
Bain Capital Life Sciences Investors, Llc is currently the largest disclosed institutional shareholder of CABA tracked by InsiderSet, reporting ownership valued at approximately $26.03M 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 $25.93M, representing an estimated loss of -0.37% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 72% of the total disclosed CABA value among the investors covered in this analysis. Major shareholders include Bain Capital Life Sciences Investors, Llc, Jennison Associates Llc, Adage Capital Partners Gp, L.L.C., and several other long-term asset managers with concentrated positions in CABALETTA BIO INC (CABA).
This page ranks the largest institutional CABA 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
111
Total Reported Value
$195.23M
Largest Holder
Bain Capital Life Sciences Investors, Llc
Largest Position
$26.03M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
127
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Bain Capital Life Sciences Investors, Llc | 2.35% | 9,677,125 | $26,031,466 | $25,934,695 | -$96,771 | -0.37% | |
| Jennison Associates Llc | 0.02% | 8,970,578 | $24,130,854 | $24,041,149 | -$89,705 | -0.37% | |
| Adage Capital Partners Gp, L.L.C. | 0.04% | 8,829,758 | $23,752,049 | $23,663,751 | -$88,298 | -0.37% | |
| Millennium Management Llc | 0.01% | 5,903,281 | $15,879,826 | $15,820,793 | -$59,033 | -0.37% | |
| Cormorant Asset Management, Lp | 0.75% | 5,500,000 | $14,795,000 | $14,740,000 | -$55,000 | -0.37% | |
| Vanguard Capital Management Llc | 0.00% | 4,028,991 | $10,837,986 | $10,797,696 | -$40,290 | -0.37% | |
| Two Sigma Investments, Lp | 0.01% | 2,497,917 | $6,719,397 | $6,694,418 | -$24,979 | -0.37% | |
| Blackrock, Inc. | 0.00% | 2,373,003 | $6,383,378 | $6,359,648 | -$23,730 | -0.37% | |
| Marshall Wace, Llp | 0.01% | 2,179,818 | $5,863,709 | $5,841,912 | -$21,797 | -0.37% | |
| Renaissance Technologies LLC | Jim Simons | 0.01% | 2,036,663 | $5,478,623 | $5,458,257 | -$20,366 | -0.37% |
| Qube Research & Technologies Ltd | 0.01% | 1,934,990 | $5,205,123 | $5,185,773 | -$19,350 | -0.37% | |
| Morgan Stanley | 0.00% | 1,408,152 | $3,787,929 | $3,773,847 | -$14,082 | -0.37% | |
| Opaleye Management Inc. | 0.49% | 1,380,000 | $3,712,200 | $3,698,400 | -$13,800 | -0.37% | |
| Woodline Partners Lp | 0.01% | 1,250,242 | $3,363,151 | $3,350,649 | -$12,502 | -0.37% | |
| Geode Capital Management, Llc | 0.00% | 1,133,245 | $3,049,912 | $3,037,097 | -$12,815 | -0.42% | |
| Superstring Capital Management Lp | 2.05% | 1,066,239 | $2,868,183 | $2,857,521 | -$10,662 | -0.37% | |
| Ikarian Capital, Llc | 0.35% | 900,000 | $2,421,000 | $2,412,000 | -$9,000 | -0.37% | |
| Goldman Sachs Group Inc | 0.00% | 783,220 | $2,106,862 | $2,099,030 | -$7,832 | -0.37% | |
| Cantor Fitzgerald, L. P. | 0.07% | 765,000 | $2,057,850 | $2,050,200 | -$7,650 | -0.37% | |
| Dimensional Fund Advisors Lp | 0.00% | 740,648 | $1,990,152 | $1,984,937 | -$5,215 | -0.26% | |
| Burkehill Global Management, Lp | 0.09% | 700,000 | $1,883,000 | $1,876,000 | -$7,000 | -0.37% | |
| Schroder Investment Management Group | 0.00% | 756,637 | $1,868,893 | $2,027,787 | +$158,894 | +8.50% | |
| Ubs Group Ag | 0.00% | 606,664 | $1,631,926 | $1,625,860 | -$6,066 | -0.37% | |
| Vanguard Fiduciary Trust Co | 0.00% | 570,191 | $1,533,814 | $1,528,112 | -$5,702 | -0.37% | |
| Kvp Capital Advisors, Lp | 1.02% | 505,431 | $1,359,609 | $1,354,555 | -$5,054 | -0.37% | |
| State Street Corp | 0.00% | 469,978 | $1,264,241 | $1,259,541 | -$4,700 | -0.37% | |
| Raiffeisen Bank International Ag | 0.02% | 450,000 | $1,111,500 | $1,206,000 | +$94,500 | +8.50% | |
| Almitas Capital Llc | 0.21% | 337,391 | $907,582 | $904,208 | -$3,374 | -0.37% | |
| Bank Of America Corp | 0.00% | 269,257 | $724,301 | $721,609 | -$2,692 | -0.37% | |
| Bridgeway Capital Management, Llc | 0.01% | 267,372 | $719,231 | $716,557 | -$2,674 | -0.37% | |
| Diametric Capital, Lp | 0.19% | 262,831 | $707,015 | $704,387 | -$2,628 | -0.37% | |
| Jane Street Group, Llc | 0.00% | 248,594 | $668,718 | $666,232 | -$2,486 | -0.37% | |
| Wellington Management Group Llp | 0.00% | 247,659 | $666,202 | $663,726 | -$2,476 | -0.37% | |
| Point72 Asset Management, L.P. | 0.00% | 246,615 | $663,394 | $660,928 | -$2,466 | -0.37% | |
| Boothbay Fund Management, Llc | 0.02% | 243,445 | $654,867 | $652,433 | -$2,434 | -0.37% | |
| Northern Trust Corp | 0.00% | 238,442 | $641,409 | $639,025 | -$2,384 | -0.37% | |
| 683 Capital Management, Llc | 0.06% | 225,000 | $605,250 | $603,000 | -$2,250 | -0.37% | |
| Invesco Ltd. | 0.00% | 192,383 | $517,510 | $515,586 | -$1,924 | -0.37% | |
| D. E. Shaw & Co., Inc. | 0.00% | 189,412 | $509,518 | $507,624 | -$1,894 | -0.37% | |
| Hudson Bay Capital Management Lp | 0.00% | 161,726 | $435,043 | $433,426 | -$1,617 | -0.37% | |
| Brevan Howard Capital Management Lp | 0.00% | 149,721 | $402,749 | $401,252 | -$1,497 | -0.37% | |
| Squarepoint Ops Llc | 0.00% | 144,681 | $389,192 | $387,745 | -$1,447 | -0.37% | |
| American Century Companies Inc | 0.00% | 108,319 | $291,378 | $290,295 | -$1,083 | -0.37% | |
| Exoduspoint Capital Management, Lp | 0.00% | 105,985 | $285,100 | $284,040 | -$1,060 | -0.37% | |
| Graham Capital Management, L.P. | 0.01% | 101,688 | $273,541 | $272,524 | -$1,017 | -0.37% | |
| Barclays Plc | 0.00% | 97,792 | $263,060 | $262,083 | -$977 | -0.37% | |
| Nomura Holdings Inc | 0.00% | 95,512 | $256,927 | $255,972 | -$955 | -0.37% | |
| Letko, Brosseau & Associates Inc | 0.00% | 90,475 | $243,378 | $242,473 | -$905 | -0.37% | |
| Quadrature Capital Ltd | 0.00% | 87,060 | $234,191 | $233,321 | -$870 | -0.37% | |
| Lpl Financial Llc | 0.00% | 69,575 | $187,157 | $186,461 | -$696 | -0.37% |
Frequently asked questions about CABA
Who owns the most CABA stock?
The largest holders of CABA 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 CABALETTA BIO INC (CABA).
Is CABA widely held by superinvestors?
Many widely followed stocks like CABA appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly CABA 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.