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

ALPHATEC HLDGS INC

40 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 02081GAD4·40 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$330M
visible holders
Holders
40
filers reporting
Concentration
19.19%
BRAIDWELL LP #1
top holder share
AI Holders Summary · Q1 2026

40 institutions reported ATEC 0.75 03/15/30 in Q1 2026. BRAIDWELL LP leads at 19.2% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
BRAIDWELL LP
CIK 0001920938
$63M61.6M2.11%Q1 202602
LINDEN ADVISORS LP
CIK 0001279396
$59M61.9M0.31%Q2 202603
ADVENT CAPITAL MANAGEMENT /DE/
CIK 0001097278
$34M35.1M0.76%Q2 202604
Context Capital Management, LLC
CIK 0001301396
$29M30.0M0.56%Q2 202605
SILVERBACK ASSET MANAGEMENT LLC
CIK 0001278960
$21M22.0M2.27%Q2 202606
CAPSTONE INVESTMENT ADVISORS, LLC
CIK 0001426196
$20M21.3M0.04%Q2 202607
Jump Financial, LLC
CIK 0001831577
$17M17.6M0.13%Q2 202608
ABSOLUTE INVESTMENT ADVISERS, LLC
CIK 0001316187
$15M14.5M1.33%Q3 202609
ARISTEIA CAPITAL, L.L.C.
CIK 0001080171
$11M12.0M0.15%Q2 202610
STATE STREET CORP
CIK 0000093751
$11M11.4M0.00%Q2 202611
SSI INVESTMENT MANAGEMENT LLC
CIK 0000938487
$9M9.4M0.52%Q2 202612
BlackRock, Inc.
CIK 0002012383
$8M7.9M0.00%Q2 202613
SHENKMAN CAPITAL MANAGEMENT INC
CIK 0001275228
$7M6.6M0.90%Q2 202614
BNP PARIBAS FINANCIAL MARKETS
CIK 0001166588
$5M5.0M0.00%Q2 202615
JPMORGAN CHASE & CO
CIK 0000019617
$5M4.8M0.00%Q2 202616
BALYASNY ASSET MANAGEMENT L.P.
CIK 0001218710
$4M4.5M0.01%Q2 202617
FMR LLC
CIK 0000315066
$4M4.1M0.00%Q2 202618
MORGAN STANLEY
CIK 0000895421
$4M4.0M0.00%Q2 202619
Jefferies Financial Group Inc.
CIK 0000096223
$3M3.1M0.02%Q2 202620
DAVIDSON KEMPNER CAPITAL MANAGEMENT LP
CIK 0001595082
$3M3.0M0.03%Q2 2026
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