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SION · Sionna Therapeutics, Inc. · Held by Funds

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$3.43 -0.27 (-7.30%) At close · Nov 12 Play latest call Q2 2026 earnings call transcript
Russell 2000 member Rebalance outlook locked
Going-concern doubt — cleared Aug 6, 2026

The latest filing states the doubt was alleviated.

“The Company has evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date that these condensed consolidated financial statements are issued. The Company believes that its existing cash, cash equivalents and marketable securities of $268.3 million as of June 30, 2026, will be sufficient to allow the Company to fund operations beyond twelve months from the date that the financial statements are issued.”
View the 10-Q filed Aug 6, 2026
Market Cap
$155.16M
Shares
45.24M
Volume · Nov 12 411.81K Avg daily vol (3M) 1.35M

Registered funds — mutual funds, ETFs and closed-end funds — whose latest Form N-PORT portfolio report holds this exact listed security, matched by CUSIP. Each row is one fund position with its size, value and weight in that fund.

Fund Ownership of SION by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 7.74% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 1.30% 589,199
Index ETFs 6.43% 2,910,114
Active ETFs 0.13% 58,706
Active funds 6.42% 2,905,702
Unclassified 0.24% 106,290
All registered funds 14.52% 6,570,011
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Funds holding SION

136 fund positions
Fund Balance Value % of Fund Open
VANGUARD TOTAL STOCK MARKET INDEX FUND 934,641 $41,114,858 0.00%
State Street(R) SPDR(R) S&P(R) Biotech ETF 647,694 $28,492,059 0.27%
JPMorgan Small Cap Growth Fund 524,280 $23,063,077 0.88%
iShares Russell 2000 ETF 483,961 $21,289,444 0.03%
Eventide Healthcare & Life Sciences Fund 474,969 $20,893,886 1.17%
T. Rowe Price Health Sciences Fund, Inc. 287,643 $12,653,416 0.11%
Fidelity Small Cap Index Fund 201,838 $9,512,625 0.03%
abrdn Healthcare Investors 201,736 $8,874,367 0.65%
iShares Biotechnology ETF 185,693 $8,168,635 0.09%
iShares Russell 2000 Growth ETF 173,168 $7,617,660 0.05%
VANGUARD EXTENDED MARKET INDEX FUND 168,369 $7,406,552 0.01%
JPMorgan Small Cap Blend Fund 166,643 $7,330,626 0.43%
PGIM Jennison Health Sciences Fund 933,570 $5,629,427 0.38%
Artisan International Small-Mid Fund 116,442 $5,122,284 0.20%
Franklin Biotechnology Discovery Fund 107,956 $5,087,966 0.44%
abrdn Life Sciences Investors 82,402 $3,624,864 0.53%
T. Rowe Price New Horizons Fund, Inc. 70,768 $3,113,084 0.02%
Schwab Small-Cap Index Fund 44,674 $2,105,486 0.03%
Driehaus Micro Cap Growth Fund 46,945 $2,065,111 0.35%
Master Small Cap Index Series 34,469 $1,516,291 0.03%
Nuveen Small Cap Blend Index Fund 24,424 $1,151,103 0.03%
Direxion Daily S&P Biotech Bull 3X Shares 22,009 $1,037,284 0.21%
iShares Core S&P Total U.S. Stock Market ETF 21,536 $947,369 0.00%
EQ/2000 Managed Volatility Portfolio 20,147 $886,267 0.02%
T. Rowe Price Health Sciences Portfolio 17,807 $783,330 0.10%
EQ/Small Company Index Portfolio 17,790 $782,582 0.04%
Fidelity Small Cap Growth Index Fund 17,278 $760,059 0.05%
VANGUARD BALANCED INDEX FUND 14,944 $657,387 0.00%
LVIP Franklin Templeton Multi-Factor SMID Cap Equity Fund 14,508 $638,207 0.06%
VANGUARD RUSSELL 2000 INDEX FUND 105,529 $636,340 0.00%
VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND 14,099 $620,215 0.00%
Nuveen Equity Index Fund 12,533 $590,680 0.00%
LVIP State Street Small-Cap Index Fund 13,200 $580,668 0.03%
Schwab U.S. Small-Cap ETF 69,261 $417,644 0.00%
Global X Russell 2000 ETF 8,820 $415,687 0.03%
Schwab Total Stock Market Index Fund 8,762 $412,953 0.00%
Small Cap Index Fund 9,298 $409,019 0.02%
Virtus Biotech Clinical Trials Etf 8,653 $407,816 0.88%
U.S. Small Cap Equity Fund 8,456 $398,531 0.04%
Fidelity ZERO Total Market Index Fund 7,675 $361,723 0.00%
ALPS Medical Breakthroughs ETF 55,581 $335,153 0.14%
Fidelity MSCI Health Care Index ETF 6,417 $302,433 0.01%
BIOTECHNOLOGY ULTRASECTOR PROFUND 6,176 $291,075 0.25%
Blackstone Alternative Multi-Strategy Fund 6,575 $289,234 0.01%
Health Sciences Trust 6,272 $275,905 0.11%
MetLife Russell 2000 Index Portfolio 6,220 $273,618 0.03%
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO 6,100 $268,339 0.01%
Fidelity ZERO Extended Market Index Fund 5,454 $257,047 0.01%
VANGUARD HEALTH CARE INDEX FUND 41,122 $247,966 0.00%
JPMorgan BetaBuilders U.S. Small Cap Equity ETF 5,243 $247,103 0.04%
Showing 1–50 of 136 positions
Key facts CIK 2036042 CUSIP 829401108 13F (30d) 67 filings 67 filers Visit website Investor relations