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CABA · Cabaletta Bio, Inc.

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$3.25 +0.06 (+1.88%)
Market Cap
$540.85M
Shares
169.55M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 142
Total Value: $505,730,995
Total Shares: 162,614,494

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 142 13F filers · Δ vs Mar 31, 2026
Top Holder
12.3%
Sep 2023 → Jun 2026 · range 7.8% – 13.8%
−0.4 pts
Top 5
46.8%
Sep 2023 → Jun 2026 · range 32.9% – 57.4%
−4.3 pts
Top 10
64.4%
Sep 2023 → Jun 2026 · range 52.7% – 73.9%
−5.7 pts
HHI
584
Sep 2023 → Jun 2026 · range 361 – 781
Broadly held−72

Quarterly Activity

vs Mar 31, 2026
New
52
Increased
54
Decreased
20
Sold Out
22
Unchanged
16
Holder count: +30
Institutional value: +116.0%
Shares held: +86.8%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 148
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1759138 CUSIP 12674W109 13F (30d) 148 filings 142 filers Visit website Investor relations