CalciMedica, Inc. (CALC) Ownership
CALC ownership summary
as of October 17, 2026- Institutions
- 57.5% of shares outstanding
- Insiders
- 18.53% of shares outstanding
- Shares outstanding
- 6.8M
- Float
- 3.8M shares available to trade
- Short interest
- 2.28% 86K shares short
- Days to cover
- 1.04 short interest down 22.6% vs prior month
- Institutions 57.51%
- Insiders 18.53%
- Other investors 23.96%
CALC top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Woodline Partners LP | 7.29% | 2.5M | $2.6M | +2.5M (0.0%) | June 30, 2026 |
| 2 | Heights Capital Management Inc | 4.56% | 1.6M | $1.6M | +1.6M (0.0%) | June 30, 2026 |
| 3 | StemPoint Capital LP | 3.65% | 1.2M | $1.3M | +1.2M (0.0%) | June 30, 2026 |
| 4 | Squadron Capital Management LLC | 3.65% | 1.2M | $1.3M | +1.2M (0.0%) | June 30, 2026 |
| 5 | Stonepine Capital Management Llc | 1.82% | 622K | $647,329 | +622,432 (0.0%) | June 30, 2026 |
| 6 | L1 Global Manager Pty Ltd | 0.73% | 249K | $258,931 | +248,972 (0.0%) | June 30, 2026 |
| 7 | Morgan Stanley - Brokerage Accounts | 0.42% | 143K | $148,975 | +143,245 (0.0%) | June 30, 2026 |
| 8 | CAMBRIDGE Invest RESEARCH ADVISORS, INC. | 0.35% | 120K | $124,800 | +60,000 (+100.0%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 0.32% | 110K | $114,896 | −12,905 (−10.5%) | June 30, 2026 |
| 10 | Renaissance Technologies Corp | 0.28% | 97K | $101,192 | −30,775 (−24.0%) | June 30, 2026 |
| 11 | Vanguard Capital Management, LLC | 0.26% | 89K | $92,514 | −80,154 (−47.4%) | June 30, 2026 |
| 12 | 180 WEALTH ADVISORS, LLC | 0.24% | 83K | $86,736 | −43,100 (−34.1%) | June 30, 2026 |
| 13 | XTX Topco Ltd | 0.23% | 78K | $81,420 | +78,288 (0.0%) | June 30, 2026 |
| 14 | HRT FINANCIAL LLC | 0.14% | 47K | $48,698 | +7,126 (+18.0%) | June 30, 2026 |
| 15 | Vanguard Fiduciary Trust Co | 0.13% | 46K | $47,662 | — | June 30, 2026 |
| 16 | Susquehanna International Group, LLP | 0.13% | 44K | $45,727 | +13,252 (+43.1%) | June 30, 2026 |
| 17 | Rockefeller Capital Management L.P. | 0.06% | 20K | $20,800 | +15,000 (+300.0%) | June 30, 2026 |
| 18 | GSA Capital Partners LLP | 0.05% | 17K | $18,168 | −6,308 (−26.5%) | June 30, 2026 |
| 19 | State Street Corp | 0.05% | 17K | $17,756 | — | June 30, 2026 |
| 20 | TritonPoint Partners, LLC | 0.04% | 15K | $15,724 | — | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 12 holders added 7.7M shares and 5 cut 173K.
CALC top mutual fund and ETF holders
5 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Abante Quant Value FI | 0.08% | 28K | $29,408 | +14,540 (+105.8%) | August 31, 2026 |
| 2 | Fidelity Extended Market Index | 0.04% | 13K | $13,821 | +3,272 (+32.7%) | August 31, 2026 |
| 3 | Fidelity Nasdaq Composite Index | 0.01% | 3,269 | $3,400 | — | August 31, 2026 |
| 4 | Fidelity Series Total Market Index | 0.01% | 2,484 | $2,583 | — | August 31, 2026 |
| 5 | Fidelity Total Market Index | 0.01% | 2,337 | $2,430 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
CALC insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-09-18 | Eric W Roberts | Buy | $3.07 | 2,500 | $7,675 |
| 2025-09-15 | Eric W Roberts | Buy | $2.68 | 3,400 | $9,112 |
| 2025-09-12 | Eric W Roberts | Buy | $3.12 | 5,000 | $15,600 |
| 2025-09-09 | Eric W Roberts | Buy | $3.15 | 2,343 | $7,380 |
| 2025-08-29 | Eric W Roberts | Buy | $2.74 | 800 | $2,192 |
| 2025-08-28 | Eric W Roberts | Buy | $2.86 | 9,200 | $26,312 |
| 2025-08-21 | Eric W Roberts | Buy | $2.79 | 3,508 | $9,787 |
| 2025-08-20 | Eric W Roberts | Buy | $2.72 | 2,000 | $5,440 |
| 2025-08-19 | Eric W Roberts | Buy | $2.79 | 1,000 | $2,790 |
| 2025-08-19 | Sudarshan Hebbar | Buy | $2.82 | 9,563 | $26,968 |
| 2025-08-15 | Eric W Roberts | Buy | $2.90 | 5,076 | $14,720 |
| 2025-08-15 | Sudarshan Hebbar | Buy | $2.79 | 4,392 | $12,254 |
| 2025-08-14 | Sudarshan Hebbar | Buy | $2.58 | 1,584 | $4,087 |
| 2025-07-28 | Kenneth A Stauderman | Buy | $3.96 | 1,000 | $3,960 |
| 2025-07-25 | Kenneth A Stauderman | Sell | $3.65 | 1,000 | $3,650 |
| 2025-07-21 | A. Rachel Leheny | Buy | $3.40 | 1,000 | $3,400 |
| 2025-07-21 | Eric W Roberts | Buy | $3.37 | 1,500 | $5,055 |
| 2025-07-18 | Eric W Roberts | Buy | $2.88 | 2,000 | $5,760 |
| 2025-07-18 | Robert N Wilson | Buy | $2.87 | 4,500 | $12,915 |
| 2025-07-14 | A. Rachel Leheny | Buy | $2.47 | 2,500 | $6,175 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
CALC shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns CALC
Institutional investors own 57.5% of CalciMedica's shares and insiders 18.53%. The largest holder is Woodline Partners LP with 7.29% of the shares (2.5M), as of June 30, 2026. Among the top 20 institutions, 12 added shares and 5 reduced their stake in the latest filings. Short interest is 2.28% of the float, or 1.04 days of average trading volume. The share count rose 1,353.2% since 2019.
Related: CALC analyst forecast, CALC key metrics. See the CALC stock overview for the latest quote and news.
CALC ownership FAQ
Who owns the most CalciMedica stock?
The largest shareholders of CalciMedica are Woodline Partners LP (7.29%), Heights Capital Management Inc (4.56%), StemPoint Capital LP (3.65%), Squadron Capital Management LLC (3.65%), Stonepine Capital Management Llc (1.82%).
What percentage of CalciMedica is owned by institutions?
Institutions hold 57.5% of CalciMedica's shares outstanding; insiders hold 18.53%.
Which funds own CalciMedica?
The largest fund holders of CalciMedica are Abante Quant Value FI (0.08%), Fidelity Extended Market Index (0.04%), Fidelity Nasdaq Composite Index (0.01%), Fidelity Series Total Market Index (0.01%), Fidelity Total Market Index (0.01%).
What is CalciMedica's short interest?
86K shares of CalciMedica were sold short, 2.28% of the float; at the average daily volume it would take 1.04 days to cover.
Are insiders buying or selling CalciMedica?
Of the latest 20 reported insider transactions in CalciMedica (since July 14, 2025), 19 were purchases and 1 were sales.
How many shares of CalciMedica are outstanding?
CalciMedica has 6.8M shares outstanding, of which 3.8M are in the public float.