ANNX Annexon, Inc.

BULLISH Impact: 3/10 ANALYST-UPGRADE
Processed 24d 11h ago SEC analyst-ANNX-chardanc-20251223
2 firms acted on ANNX: Chardan Capital, Clear Street
Final — all horizons settled through T+60d
ANNX ▲ +5.09% at T+60d
LONG call ✓ call won +5.09% · α vs SPY +9.82% · entry $5.11 → $5.37
Last close $5.12 (close Jun 8) · +0.20% from $5.11 entry
Entry anchored
Dec 22, 03:59 PM ET
via Databento tick
T+1d
+1.37%
call +1.37% · α +0.99%
$5.18
settled 6mo ago
T+5d
-1.76%
call -1.76% · α -0.93%
$5.02
settled 5mo ago
T+20d
+32.68%
call +32.68% · α +32.53%
$6.78
settled 5mo ago
T+60d
+5.09%
call +5.09% · α +9.82%
$5.37
settled 3mo ago

Price Chart

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Executive Summary

Chardan Capital initiated coverage of ANNX at Buy with a $16 price target on Dec 23, 2025, alongside Clear Street's Buy initiation at $17 on Dec 2. The stock trades at $5.37, implying 198% upside to Chardan's target. Consensus is overwhelmingly bullish: 15 of 16 analysts rate Buy or Strong Buy, with only 1 Hold. Mean target is $13.13 (144% upside), median $11.50. Chardan's accuracy is 49% on 408 calls with a 7.8% average return — slightly below the peer average but not a standout. EPS estimates have been revised higher over the past 30 days: the current-year loss narrowed from -$1.16 to -$0.96, and next-quarter loss from -$0.28 to -$0.24. Insider buying by director Carson William H. in three consecutive months (Mar-May 2026) totaling ~$141K provides a bullish contra-signal to any bearish read. Institutional activity is mixed: Vanguard (+33%), Wells Fargo (+40%), and Morgan Stanley (+264%) added, while FMR trimmed 29%. Short interest is elevated at 73.6% of float, creating potential squeeze dynamics. Earnings are due May 18, 2026 — within 30 days — adding timing risk. Bottom line: a high-upside, high-risk small-cap biotech with strong analyst consensus, insider buying, and a looming catalyst.

Impact Score

Base Score
1/7
LLM Adjustment
+2
Final Score
3/10

Consensus & Targets

Buy / Strong Buy
15 (94%)
Hold
1
Sell / Strong Sell
0
Total Analysts
8
Mean PT
$13.13
Median PT
$11.50
High PT
$27.00
Low PT
$7.00
Current Price
$5.37
Implied Upside
+144.4%

Consensus is heavily bullish: 4 Strong Buy, 11 Buy, 1 Hold, 0 Sell, 0 Strong Sell across 16 analysts. That's 94% Buy/Strong Buy — near-unanimous bullishness. The lone Hold is from Goldman Sachs (initiated Neutral at $7 on May 12, 2026). Direction: overwhelmingly positive.

Current price: $5.37. Mean target: $13.13 (144% upside). Median: $11.50. High: $27 (Wells Fargo, Nov 2025). Low: $7 (Goldman Sachs). Chardan's $16 target is above the mean and median, ranking as the 3rd highest among 8 analysts. The wide range ($7–$27) reflects high uncertainty typical of small-cap biotech.

Recent Analyst Activity

DateFirmActionRatingPrice Target
2026-05-12 Goldman Sachs initiate Neutral $7.00
2026-03-20 Chardan Capital maintain Buy
2025-12-23 Chardan Capital initiate Buy $16.00
2025-12-02 Clear Street initiate Buy $17.00
2025-11-19 Wells Fargo maintain Overweight $27.00
2025-08-15 HC Wainwright & Co. reiterate Buy $14.00
2025-05-14 HC Wainwright & Co. maintain Buy $14.00
2025-05-13 Needham maintain Buy $11.00
2025-03-04 Needham reiterate Buy $16.00
2024-12-17 HC Wainwright & Co. reiterate Buy $30.00

30-day analyst activity: 1 upgrade (Chardan initiation) and 0 downgrades. EPS revisions are positive: current-year EPS estimate improved from -$1.16 to -$0.96 over 30 days (2 revisions up, 2 down). Next-quarter estimate improved from -$0.28 to -$0.24. The trend is modestly positive — estimates are being revised higher, not lower.

Firm Track Record — Chardan Capital

Chardan Capital accuracy: 49% on 408 calls | avg return: 7.8%

Industry benchmark: mean 51% ± 11%. Top tier: ≥61% (mean + 1σ). Based on 4 firms with ≥5 scored calls.

FirmAccuracyCallsAvg Returnvs Average
HC Wainwright & Co. 50% 4/8 -7.6% below average
Wells Fargo 50% 2/4 -0.9% below average
Needham 38% 3/8 -3.2% below average
Cantor Fitzgerald 20% 1/5 -14.6% below average

Chardan Capital has a 49% accuracy rate on 408 calls with a 7.8% average return — slightly below the peer average. Among firms covering ANNX, HC Wainwright (50% on 8 calls) and Wells Fargo (50% on 4 calls) have better accuracy but small samples. Needham (38% on 8 calls) and Cantor Fitzgerald (20% on 5 calls) are weaker. Chardan's large sample gives its 49% more statistical weight than the smaller-sample firms.

Earnings Estimates

Next earnings: May 18, 2026

PeriodEPS Est.EPS RangeRevenueRevisions (7d)
0y $-0.96 $-1.14 — $-0.86 $0.00 ↑2 ↓0
+1q $-0.24 $-0.30 — $-0.21 $0.00 ↑0 ↓0
0q $-0.24 $-0.27 — $-0.22 $0.00 ↑0 ↓0
+1y $-0.90 $-1.13 — $-0.64 $44.9M ↑1 ↓0

Cross-Platform Signals

Insider Trades (90d)
3 buys / 2 sells
Institutional
VANGUARD GROUP INC — add (32.9%)
Institutional
WELLS FARGO & COMPANY/MN — add (40.1%)
Institutional
CHARLES SCHWAB INVESTMENT MANAGEMENT INC — add (33.8%)
Short Interest
Short: 395,249 | Exempt: 15 | TRF Vol: 537,142 | Short Ratio: 73.6% | Off-exchange volume (dark pool + OTC)

Insider activity is a key bullish signal: director Carson William H. bought ~$141K total across Mar, Apr, and May 2026 — a cluster of buys opposing any bearish read. Two other insiders (ARTIS DEAN RICHARD and Dananberg Jamie) sold ~$32K each on Mar 2, 2026 — small, likely liquidity-driven sales that do not offset the buying cluster. No congressional trades. Institutional changes are mixed but net positive: Vanguard (+33%), Wells Fargo (+40%), and Morgan Stanley (+264%) added, while FMR trimmed 29%. Short interest is extremely high at 73.6% of float — a potential squeeze catalyst if positive news hits. The analyst bullish consensus converges with insider buying and institutional accumulation, while the high short interest diverges as a bearish bet.

Actionable Insight

The cluster of bullish initiations, insider buying, and improving EPS estimates create a compelling setup for a high-risk/high-reward trade ahead of May 18 earnings. The 73.6% short interest adds squeeze potential — any positive catalyst could trigger a sharp rally. Position sizing must account for the wide target range ($7–$27) and imminent binary event.

Documents Analyzed

Report based on filing metadata.

7 reports for ANNX
Performance horizon
75% Hit rate 3 of 4 directional calls best @ T+5▲ +8.82%May 12, 2026
Filters
Rows
Reports for ANNX — sortable, filterable
Type Now
May 16, 2026
24d ago
ANALYST-UPGRADE
BULLISH ★ 3/10
$5.11 $5.02▼ −1.76%▼ −0.93%$5.12 (+0.20%)
May 12, 2026
28d ago
ANALYST-UPGRADE
BEARISH ★ 4/10
$5.44 $4.96▲ +8.82%▲ +8.90%$5.12 (+5.88%)
May 7, 2026
4w ago
Press Release
BULLISH ★ 6/10
$5.69 $5.37▼ −5.62%▼ −7.09%$5.12 (−10.02%)
Apr 16, 2026
7w ago
ANALYST-UPGRADE
BULLISH ★ 8/10
$6.33 $6.06▼ −4.27%▼ −5.25%$5.12 (−19.12%)
Apr 16, 2026
7w ago
ANALYST-UPGRADE
BULLISH ★ 7/10
$6.33 $6.06▼ −4.27%▼ −5.25%$5.12 (−19.12%)
Mar 30, 2026
10w ago
Press Release
NEUTRAL ★ 4/10
$5.54 $6.05▲ +9.21%▲ +5.26%$5.12 (−7.58%)
Mar 2, 2026
14w ago
Insider Cluster
NEUTRAL ★ 3/10
$5.52 $5.59▲ +1.27%▲ +2.48%$5.12 (−7.25%)
Showing 7 of 7

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