카발레타바이오(주)
US ˙ NasdaqGS ˙ US12674W1099

SecurityCABA / Cabaletta Bio, Inc.
InstitutionXTX Topco Ltd
Latest Disclosed Ownership12,512 shares
Latest Disclosed Value $ 33,657
XTX Topco Ltd reports 91.95% decrease in ownership of CABA / Cabaletta Bio, Inc.

On May 15, 2026 - XTX Topco Ltd filed a 13F-HR form disclosing ownership of 12,512 shares of Cabaletta Bio, Inc. (US:CABA) valued at $33,657 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 155,387 shares of Cabaletta Bio, Inc.. This represents a change in shares of -91.95% during the quarter. The current value of the position is $43,917 USD.

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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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 CABALETTA BIO COM 12674W109 12,512 -142,875 -91.95 34 -90.29 0.0006
2026-02-17 2025-12-31 13F CABALETTA BIO COM 12674W109 155,387 -128,912 -45.34 340 -48.87 0.0089
2025-11-14 2025-09-30 13F CABALETTA BIO COM 12674W109 284,299 187,039 192.31 665 352.38 0.0345
2025-08-12 2025-06-30 13F CABALETTA BIO COM 12674W109 97,260 97,260 148 0.0061
2025-02-13 2024-12-31 13F CABALETTA BIO COM 12674W109 0 -87,455 -100.00 0 -100.00
2024-11-14 2024-09-30 13F CABALETTA BIO COM 12674W109 87,455 72,638 490.23 413 274.55 0.0298
2024-08-12 2024-06-30 13F CABALETTA BIO COM 12674W109 14,817 990 7.16 111 -53.19 0.0095
2024-05-13 2024-03-31 13F CABALETTA BIO COM 12674W109 13,827 13,827 236 0.0318
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.