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C4 Therapeutics, Inc. · 13F filings

CCCC Institutional Ownership

Holdings as of Jun 30, 2026From SEC Form 13FUpdated

Who owns C4 Therapeutics, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 150 funds reported holding CCCC at Jun 30, 2026, together owning 95.6% of the company.

← CCCC stock page

Fund sentiment
Bullish
Strongly bearishNeutralStrongly bullish
  • ▲105 buying vs 57 selling
  • ▲Held by funds +26.5 pts
  • ▲Funds holding +25
  • ●Superinvestors: 2 added, 2 cut
  • ●Put/call not meaningful

What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.

Funds holding150+25 vs Q1 2026
Held by funds95.6%+26.5 pts
Value held$548M118M shares
Put/call ratio0.00down from 0.00

Funds holding and ownership

8 quarters
Q3 2024: 118 fundsQ3 '24Q4 2024: 113 fundsQ4 '24Q1 2025: 115 fundsQ1 '25Q2 2025: 102 fundsQ2 '25Q3 2025: 97 fundsQ3 '25Q4 2025: 101 fundsQ4 '25Q1 2026: 125 fundsQ1 '26Q2 2026: 150 fundsQ2 '2695.6% owned
Funds holdingHeld by funds %

Quarter over quarter

all 13F filers
Q2 2026This quarterQ1 2026Change
Funds holding150125+20.0%
In funds' top 1021+100.0%
13F shares118M85.1M+38.3%
Held by funds95.6%69.1%+26.5 pts
New positions5232+62.5%
Increased5341+29.3%
Reduced3031−3.2%
Sold out2711+145.5%
Calls (shares)577K400+144175.0%
Puts (shares)00–
Put/call ratio0.000.00–

Buyers vs sellers

adding or new vs cutting or sold out
Q4 2024: 54 buyingQ4 2024: 63 sellingQ4 '24Q1 2025: 66 buyingQ1 2025: 51 sellingQ1 '25Q2 2025: 57 buyingQ2 2025: 71 sellingQ2 '25Q3 2025: 48 buyingQ3 2025: 63 sellingQ3 '25Q4 2025: 67 buyingQ4 2025: 36 sellingQ4 '25Q1 2026: 73 buyingQ1 2026: 42 sellingQ1 '26Q2 2026: 105 buyingQ2 2026: 57 sellingQ2 '26
Buying 105Selling 57latest quarter

Superinvestors in CCCC

All superinvestors →

Who owns CCCC

share of fund held shares
  • Index and passive funds18.5%
  • Active managers and hedge funds60.5%
  • Banks and brokers20.7%
  • Pensions, insurers and other0.2%

The top 10 holders own 53.8% of all CCCC shares that funds reported. Groups are our own grouping of filers by name.

Put/call ratio

funds' options, market makers left out
1.00Q3 2024: 0.00Q3 '24Q4 2024: 0.00Q4 '24Q3 2025: 0.00Q3 '25Q4 2025: 0.01Q4 '25Q1 2026: 0.00Q1 '26Q2 2026: 0.00Q2 '260.00

Above 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.

Filed so far for Q3 2026

17 funds changed their position

🔒 Free account: see all 17.

Top holders

Q2 2026
#FundOf companySharesValueChange
1Morgan Stanley7.21%8.9M$41.4M−205K
2RA Capital Management, L.P.6.50%8M$37.4M0
3BlackRock, Inc.6.42%7.9M$36.9M+5.8M
4Lynx1 Capital Management LP5.96%7.3M$34.2M+328K
5Squadron Capital Management LLC5.85%7.2M$33.6M+5M
6Bain Capital Life Sciences Investors, LLC5.83%7.2M$33.5M0
7Jpmorgan Chase & Co3.86%4.7M$20.7M+1.5M
8Vanguard Capital Management LLC3.59%4.4M$20.6M+556K
9Citadel Advisors LLC3.40%4.2M$19.6M+1.7M
10Goldman Sachs Group Inc2.87%3.5M$16.5M+1.1M
🔒 15 more top holders. Create a free account or sign in to see them.
Biggest buyers
Biggest sellers

CCCC institutional ownership FAQ

Who owns the most CCCC stock?

In Q2 2026 13F filings the largest holder of CCCC was Morgan Stanley, followed by RA Capital Management, L.P. and BlackRock, Inc.. Index fund managers are usually the biggest holders of large companies.

What percentage of CCCC is owned by institutions?

Funds that file 13F reports held 95.6% of CCCC's shares at Jun 30, 2026, compared with 69.1% a quarter earlier. That counts every manager with more than $100 million in US stocks.

Are hedge funds buying CCCC?

In Q2 2026, 105 funds bought CCCC (52 of them new positions) and 57 sold (27 sold out completely). Among well known investors, 2 added and 2 cut. Our fund sentiment for CCCC is bullish.

What is CCCC's institutional put/call ratio?

Funds reported $0 of CCCC puts against $2.7M of calls, a put/call ratio of 0.00 (0.00 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.

How current is this CCCC ownership data?

13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.

For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.