13F Insight
DOSSIER · 13F Holders · Q1 2026
ATEC 0.75 03/15/30

ALPHATEC HLDGS INC

30 institutions still hold ALPHATEC HLDGS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 02081GAD4·30 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$375M
visible holders
Holders
30
filers reporting
Concentration
19.13%
LINDEN ADVISORS LP #1
top holder share
AI Holders Summary · Q1 2026

30 institutions reported ATEC 0.75 03/15/30 in Q1 2026. LINDEN ADVISORS LP leads at 19.1% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
LINDEN ADVISORS LP
CIK 0001279396
$72M69.9M0.40%Q1 202602
VOYA INVESTMENT MANAGEMENT LLC
CIK 0001068837
$67M65.4M0.07%Q1 202603
BRAIDWELL LP
CIK 0001920938
$63M61.6M2.11%Q1 202604
Context Capital Management, LLC
CIK 0001301396
$29M30.0M0.56%Q2 202605
Jump Financial, LLC
CIK 0001831577
$21M20.3M0.28%Q1 202606
CAPSTONE INVESTMENT ADVISORS, LLC
CIK 0001426196
$19M18.8M0.03%Q1 202607
Calamos Advisors LLC
CIK 0001316507
$17M16.7M0.06%Q1 202608
BlackRock, Inc.
CIK 0002012383
$16M15.2M0.00%Q1 202609
SILVERBACK ASSET MANAGEMENT LLC
CIK 0001278960
$15M14.3M2.10%Q1 202610
ABSOLUTE INVESTMENT ADVISERS, LLC
CIK 0001316187
$14M14.5M1.33%Q2 202611
SSI INVESTMENT MANAGEMENT LLC
CIK 0000938487
$6M5.8M0.41%Q1 202612
FMR LLC
CIK 0000315066
$5M5.2M0.00%Q1 202613
STATE STREET CORP
CIK 0000093751
$5M5.1M0.00%Q1 202614
BNP PARIBAS FINANCIAL MARKETS
CIK 0001166588
$5M5.0M0.00%Q1 202615
MORGAN STANLEY
CIK 0000895421
$5M4.8M0.00%Q1 202616
CITIGROUP INC
CIK 0000831001
$5M4.5M0.00%Q1 202617
Jefferies Financial Group Inc.
CIK 0000096223
$4M3.6M0.03%Q1 202618
JPMORGAN CHASE & CO
CIK 0000019617
$3M4.7M0.00%Q1 202619
SHENKMAN CAPITAL MANAGEMENT INC
CIK 0001275228
$3M2.6M0.33%Q1 202620
Invesco Ltd.
CIK 0000914208
$2M2.0M0.00%Q1 2026
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