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SION · Sionna Therapeutics, Inc.

Track SION — free
$7.85 +0.23 (+3.02%) At close · Sep 11
Market Cap
$354.92M
Shares
45.21M

Price & Indicators

20d MA 50d MA 200d MA Earnings Filing Insider Congress Investor day
Close$7.85 Open$7.79 Day$7.47–8.03 52W close$4.50–51.04 Avg vol 30d3.4M Short int4.3M · 9.5% float · 2.6d Short vol45% Last earningsAug 6, 2026 DataFeb 2025–Sep 2026 Filing10-Q · Aug 6

Up next

Next earnings call
Oct 31, 2026 Est · unconfirmed · in 7 wks
filed Aug 6, 2026

Metrics snapshot

Useful current figures from the complete screener profile.

Revenue (TTM)
Trailing 12 months
Net income (TTM)
−$97.38M
Trailing 12 months
Revenue growth YoY
Year over year
Operating margin
Trailing 12 months
P / E (TTM)
Trailing earnings
FCF yield
-21.4%
TTM · current market cap
Return on invested capital
Trailing 12 months
Net cash
$63.32M
Latest balance sheet
Dividend yield
Trailing 12 months
Shares change YoY
+2.3%
Year over year · more shares
Price change (1Y)
-67.5%
Trailing year
Short interest
9.5%
Latest settlement · 2.6 days to cover
View all 115 metrics

AI Brief

Q2 FY26 earnings call · Aug 6, 2026
Q2 FY26

TL;DR. Sionna reported that its Phase 2a Precision CF trial of SION-719 added to Trikafta failed to meet its primary activity endpoint (mean placebo-adjusted sweat chloride change of -1 mmol/L, p=0.7, vs. a targeted ≥10 mmol/L improvement), and the company is discontinuing development of 719 as add-on therapy; the Phase 1 dual combination trial of SION-451 met its safety, tolerability, and PK goals and identified 451+2222 as the preferred dual combination. The company ended Q2 with $268.3M in cash and is taking actions to preserve capital while evaluating next steps for 451+2222.

Bullish
  • + Phase 1 dual combination trial of SION-451 met safety, tolerability, and PK objectives, exceeding target exposures set before the Precision CF readout.
  • + 451+2222 selected as preferred dual combination based on favorable tolerability and exposure.
  • + Cash position of $268.3M is expected to fund operations into 2028.
Bearish
  • Company is discontinuing development of SION-719 as an add-on to standard of care.
  • Higher-than-expected variability in sweat chloride and observed differential Trikafta exposure between treatment periods are potential confounders that require further investigation before deciding the 451+2222 path forward.

AI-generated from the earnings call and 8-K · may contain errors · not investment advice

Equibles Rating

blended score · not investment advice
Overall
Sell
SellHoldBuy
Technical Sell Momentum Weak Sentiment Neutral Fundamentals Fair Quant / Vol Very High
Market backdrop VIX 15.8 · calm Equity put/call 0.60
Technical
price trend
Sell
50 / 200-day cross No cross
Price vs 200-day avg −78%
below
Price vs 50-day avg −71%
below
RSI (14) 32
neutral
MACD trend Positive
52-week position 7%
near low
Volume (OBV) Confirms
volume backs price
Momentum
relative strength
Weak
1-month return +20%
trailing
6-month return −78%
trailing
YTD return −81%
this year
Relative strength −96%
vs S&P · 6-mo
Sentiment
smart money
Neutral
Trend (MA cross) No cross
50d $27 › 200d $36 — 200d above 50d
Institutional flow Accumulating
+23% holders QoQ · +37 funds added
Insider flow Flat
No net insider activity over 90 days
Short interest Rising
9.51% of float · ▲ +1.2% MoM · 2.6 days cover
Volume signal Normal
Volume near normal
Institution breadth Multi-yr high
150 holders — near 1-yr high, broad support
Squeeze score 52
elevated · 0–100
Fundamentals
Fair
EPS growth +88%
Y/Y
Free cash flow $-66.7M
Quant / Vol
risk profile
Very High
Volatility 123%
annualized · 1-yr
Max drawdown −91%
past year
ATR 21.6%
of price · 14-day

Blended from price, momentum, positioning, fundamentals & volatility · daily-close · not investment advice. Market backdrop is context, not part of the score.

Technicals

trend & momentum for long-term holders Sell
3 · 3 · 1
50 / 200-day cross
No cross Neutral
Price vs 200-day avg
−78% Bearish
Price vs 50-day avg
−71% Bearish
RSI (14)
32 Neutral
MACD trend
Positive Bullish
52-week position
7% Bearish
Volume (OBV)
Confirms Neutral
Market signals — smart money & positioning
Bullish · 2 of 6
Trend (MA cross) No cross
50d $27 › 200d $36 — 200d above 50d
Institutional flow Accumulating
+23% holders QoQ · +37 funds added
Insider flow Flat
No net insider activity over 90 days
Short interest Rising
9.51% of float · ▲ +1.2% MoM · 2.6 days cover
Volume signal Normal
Volume near normal
Institution breadth Multi-yr high
150 holders — near 1-yr high, broad support
Price context
position in its 52-week range
Range low $5 Now $8 · 7% Range high $51
vs 200-day avg -78% vs 50-day avg -71%

Illustrative technical + ownership context — a signal mix, not investment advice.

Key metrics

Earlier KPI extraction records exist, but do not meet the current evidence-completeness requirements. No current verified series is available. Earlier figures remain withheld until revalidated; this is not evidence that the company reports no KPIs.

Versus peers

Biotechnology — same industry group
Open screener →
Company Mkt cap YTD Rev growth Y/Y P/E Short % shares
SION
Sionna Therapeutics, Inc.
this stock
$354.92M -80.9% 9.5%
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Vertex Pharmaceuticals Inc / Ma
$130.64B +13.7% +46.2% 30.0 1.8%
REGN
Regeneron Pharmaceuticals, Inc.
$80.46B +1.2% +20.8% 19.4 2.5%
ARGX
Argenx SE
$61.22B +17.1% 2.0%
MRNA
Moderna, Inc.
$57.48B +388.2% +4.3% 9.8%

Peers by industry group · P/E from as-reported trailing EPS · short % is of shares outstanding

At a glance

key data from every section
Ownership
Institutional Holders Accumulating
Holders
150
% held
106.8%
Net QoQ
+2.9M sh
Top holder
RA CAPITAL MANAGEMENT, L.…
Held Float
View
Held by Funds
Fund positions
134
View
Short & Settlement
Short Interest Rising
Shares short
4.3M
Days to cover
2.6d
Change
+50.8K sh
View
Short Volume
Short vol %
45%
As of
Sep 11, 2026
Short Total
View
Fails to Deliver
FTD shares
13.8K
Value
$90.1K
As of
Aug 14, 2026
View
Off-Exchange
Off-exchange %
48.1%
Week of
Aug 3, 2026
Off-exch Lit
View
Financials
Financials
Net income (FY)
$-75.3M
EPS diluted
$-1.88
View
Filings
SEC Filings
Latest
8-K
Filed
Aug 10, 2026
This year
12
View
Proposed Sales
Value
$450.9K
Shares
10.3K
Filed
Jul 6, 2026
View
Earnings & Events
Earnings Calls
Last call
Aug 10, 2026
View

Performance

5D 20D 120D MTD YTD
SION +16.3% +20.0% -78.4% +30.2% -80.9%
SPY -1.2% -1.8% +17.8% -0.4% +12.1%
vs SPY +17.5% +21.8% -96.3% +30.5% -93.0%
Key facts CIK 2036042 CUSIP 829401108 13F (30d) 94 filings 94 filers Visit website Investor relations