As of the latest SEC filings, CASTLE BIOSCIENCES INC (CSTL) is held by 240 institutional funds. The largest fund shareholder is VANGUARD TOTAL STOCK MARKET INDEX FUND (VTI), holding an estimated $20,228,316.20 in market value, representing a significant portion of its portfolio.
Funds holding CASTLE BIOSCIENCES INC (CSTL)
Source: SEC Form N-PORT institutional portfolio disclosures
- Ticker:
- CSTL
- CIK:
- 0001447362
| Fund | Type | Manager | Weight | Market Value | Shares |
Report Date
|
Filing Date
|
|---|---|---|---|---|---|---|---|
|
VTI
VANGUARD TOTAL STOCK MARKET INDEX FUND
|
ETF | Vanguard | 0.00% | $20,228,316.20 | 823,964 | Mar 31, 2026 | May 28, 2026 |
|
FSAKX
Strategic Advisers U.S. Total Stock Fund
|
MF | Fidelity | 0.02% | $19,645,036.49 | 664,357 | Feb 28, 2026 | Apr 24, 2026 |
|
PSBMX
SmallCap Fund
|
MF | Independent / Boutique | 0.83% | $17,344,748.62 | 708,238 | Apr 30, 2026 | Jun 25, 2026 |
|
IWM
iShares Russell 2000 ETF
|
ETF | BlackRock / iShares | 0.02% | $17,329,476.75 | 705,885 | Mar 31, 2026 | May 28, 2026 |
|
ETAHX
Eventide Healthcare & Life Sciences Fund
|
MF | Independent / Boutique | 0.60% | $9,486,733.75 | 386,425 | Mar 31, 2026 | May 29, 2026 |
|
VEMPX
VANGUARD EXTENDED MARKET INDEX FUND
|
ETF | Vanguard | 0.01% | $7,992,866.25 | 325,575 | Mar 31, 2026 | May 28, 2026 |
|
FSSNX
Fidelity Small Cap Index Fund
|
MF | Fidelity | 0.02% | $6,965,323.35 | 284,415 | Apr 30, 2026 | Jun 26, 2026 |
|
WGICX
Wasatch Micro Cap Fund
|
MF | Independent / Boutique | 1.21% | $6,792,616.75 | 276,685 | Mar 31, 2026 | May 5, 2026 |
|
VEXPX
VANGUARD EXPLORER FUND
|
MF | Vanguard | 0.03% | $6,756,570.59 | 275,891 | Apr 30, 2026 | Jun 26, 2026 |
|
IWN
iShares Russell 2000 Value ETF
|
ETF | BlackRock / iShares | 0.05% | $6,094,758.45 | 248,259 | Mar 31, 2026 | May 28, 2026 |
|
BUFSX
Buffalo Small Cap Growth Fund
|
MF | Independent / Boutique | 1.51% | $5,882,523.70 | 239,614 | Mar 31, 2026 | May 22, 2026 |
|
JABAX
Janus Henderson Balanced Fund
|
MF | Independent / Boutique | 0.02% | $5,465,984.29 | 5,520,000 | Mar 31, 2026 | May 29, 2026 |
|
IBB
iShares Biotechnology ETF
|
ETF | BlackRock / iShares | 0.07% | $5,295,164.95 | 215,689 | Mar 31, 2026 | May 28, 2026 |
|
BDSKX
BlackRock Advantage Small Cap Core Fund
|
MF | BlackRock / iShares | 0.10% | $4,537,457.36 | 153,448 | Feb 27, 2026 | Apr 24, 2026 |
|
FSMAX
Fidelity Extended Market Index Fund
|
MF | Fidelity | 0.01% | $4,510,903.50 | 152,550 | Feb 28, 2026 | Apr 24, 2026 |
|
WGMCX
Wasatch Ultra Growth Fund
|
MF | Independent / Boutique | 1.05% | $4,213,835.65 | 171,643 | Mar 31, 2026 | May 5, 2026 |
|
VTWO
VANGUARD RUSSELL 2000 INDEX FUND
|
ETF | Vanguard | 0.03% | $4,164,964.07 | 140,851 | Feb 28, 2026 | Apr 28, 2026 |
|
SCHA
Schwab U.S. Small-Cap ETF
|
ETF | Charles Schwab | 0.02% | $4,160,025.88 | 140,684 | Feb 28, 2026 | Apr 24, 2026 |
|
VSTCX
VANGUARD STRATEGIC SMALL-CAP EQUITY FUND
|
MF | Vanguard | 0.17% | $4,130,611.15 | 168,253 | Mar 31, 2026 | May 28, 2026 |
|
TCSEX
Nuveen Quant Small Cap Equity Fund
|
MF | TIAA / Nuveen | 0.10% | $3,766,904.86 | 153,814 | Apr 30, 2026 | Jun 24, 2026 |
|
ACSMX
Advisors Capital Small/Mid Cap Fund
|
MF | Independent / Boutique | 2.89% | $3,314,250.00 | 135,000 | Mar 31, 2026 | May 21, 2026 |
|
BSVO
EA Bridgeway Omni Small-Cap Value ETF
|
ETF | Independent / Boutique | 0.16% | $3,245,117.20 | 132,184 | Mar 31, 2026 | Jun 1, 2026 |
|
DFSTX
U.S. SMALL CAP PORTFOLIO
|
MF | Dimensional Fund Advisors | 0.02% | $3,217,128.85 | 131,365 | Apr 30, 2026 | Jun 24, 2026 |
|
NSCAX
Nuveen Small Cap Value Opportunities Fund
|
MF | Nuveen | 0.98% | $2,639,714.20 | 107,524 | Mar 31, 2026 | May 28, 2026 |
|
VHCIX
VANGUARD HEALTH CARE INDEX FUND
|
ETF | Vanguard | 0.01% | $2,589,622.32 | 87,576 | Feb 28, 2026 | Apr 28, 2026 |
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