As of the latest SEC filings, Sionna Therapeutics, Inc. (SION) is held by 129 institutional funds. The largest fund shareholder is VANGUARD TOTAL STOCK MARKET INDEX FUND (VTI), holding an estimated $33,793,504.69 in market value, representing a significant portion of its portfolio.
Funds holding Sionna Therapeutics, Inc. (SION)
Source: SEC Form N-PORT institutional portfolio disclosures
- Ticker:
- SION
- CIK:
- 0002036042
| Fund | Type | Manager | Weight | Market Value | Shares |
Report Date
|
Filing Date
|
|---|---|---|---|---|---|---|---|
|
VTI
VANGUARD TOTAL STOCK MARKET INDEX FUND
|
ETF | Vanguard | 0.00% | $33,793,504.69 | 842,941 | Mar 31, 2026 | May 28, 2026 |
|
ETAHX
Eventide Healthcare & Life Sciences Fund
|
MF | Independent / Boutique | 1.63% | $25,838,967.16 | 644,524 | Mar 31, 2026 | May 29, 2026 |
|
PHLQX
PGIM Jennison Health Sciences Fund
|
MF | PGIM / Prudential | 1.63% | $23,789,293.92 | 651,048 | Feb 27, 2026 | Apr 23, 2026 |
|
PGSGX
JPMorgan Small Cap Growth Fund
|
MF | JPMorgan | 1.02% | $22,122,824.61 | 551,829 | Mar 31, 2026 | May 29, 2026 |
|
PRHSX
T. Rowe Price Health Sciences Fund, Inc.
|
MF | T. Rowe Price | 0.20% | $21,946,989.87 | 547,443 | Mar 31, 2026 | May 28, 2026 |
|
XBI
State Street(R) SPDR(R) S&P(R) Biotech ETF
|
ETF | State Street (SPDR) | 0.22% | $16,702,696.70 | 416,630 | Mar 31, 2026 | May 28, 2026 |
|
IWM
iShares Russell 2000 ETF
|
ETF | BlackRock / iShares | 0.02% | $16,030,748.21 | 399,869 | Mar 31, 2026 | May 28, 2026 |
|
HQH
abrdn Healthcare Investors
|
CEF | abrdn / Aberdeen | 1.40% | $15,880,611.16 | 396,124 | Mar 31, 2026 | May 29, 2026 |
|
IBB
iShares Biotechnology ETF
|
ETF | BlackRock / iShares | 0.09% | $7,420,699.09 | 185,101 | Mar 31, 2026 | May 28, 2026 |
|
VSCCX
JPMorgan Small Cap Blend Fund
|
MF | JPMorgan | 0.50% | $7,142,073.59 | 178,151 | Mar 31, 2026 | May 29, 2026 |
|
HQL
abrdn Life Sciences Investors
|
CEF | abrdn / Aberdeen | 1.20% | $6,737,164.59 | 168,051 | Mar 31, 2026 | May 29, 2026 |
|
VEMPX
VANGUARD EXTENDED MARKET INDEX FUND
|
ETF | Vanguard | 0.01% | $6,394,555.45 | 159,505 | Mar 31, 2026 | May 28, 2026 |
|
FSSNX
Fidelity Small Cap Index Fund
|
MF | Fidelity | 0.02% | $6,220,638.00 | 160,740 | Apr 30, 2026 | Jun 26, 2026 |
|
IWO
iShares Russell 2000 Growth ETF
|
ETF | BlackRock / iShares | 0.04% | $5,290,998.02 | 131,978 | Mar 31, 2026 | May 28, 2026 |
|
CZMSX
Multi-Manager Small Cap Equity Strategies Fund
|
MF | Columbia Threadneedle | 0.24% | $2,994,453.00 | 81,950 | Feb 28, 2026 | Apr 27, 2026 |
|
VTWO
VANGUARD RUSSELL 2000 INDEX FUND
|
ETF | Vanguard | 0.02% | $2,907,780.12 | 79,578 | Feb 28, 2026 | Apr 28, 2026 |
|
FSMAX
Fidelity Extended Market Index Fund
|
MF | Fidelity | 0.01% | $2,744,702.10 | 75,115 | Feb 28, 2026 | Apr 24, 2026 |
|
SCHA
Schwab U.S. Small-Cap ETF
|
ETF | Charles Schwab | 0.01% | $2,496,047.40 | 68,310 | Feb 28, 2026 | Apr 24, 2026 |
|
FBTDX
Franklin Biotechnology Discovery Fund
|
MF | Franklin Templeton | 0.23% | $2,356,481.70 | 60,891 | Apr 30, 2026 | Jun 24, 2026 |
|
IWC
iShares Micro-Cap ETF
|
ETF | BlackRock / iShares | 0.14% | $1,640,763.43 | 40,927 | Mar 31, 2026 | May 28, 2026 |
|
SBIO
ALPS Medical Breakthroughs ETF
|
ETF | Independent / Boutique | 1.05% | $1,453,415.04 | 39,776 | Feb 28, 2026 | Apr 29, 2026 |
|
DWAS
Invesco Dorsey Wright SmallCap Momentum ETF
|
ETF | Invesco | 0.36% | $1,380,810.06 | 37,789 | Feb 28, 2026 | Apr 28, 2026 |
|
VFMO
VANGUARD U.S. MOMENTUM FACTOR ETF
|
ETF | Vanguard | 0.10% | $1,379,823.48 | 37,762 | Feb 28, 2026 | Apr 28, 2026 |
|
SWSSX
Schwab Small-Cap Index Fund
|
MF | Charles Schwab | 0.02% | $1,378,416.60 | 35,618 | Apr 30, 2026 | Jun 25, 2026 |
|
-
Master Small Cap Index Series
|
ETF | Independent / Boutique | 0.02% | $1,088,924.58 | 27,162 | Mar 31, 2026 | May 28, 2026 |
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