Stock

Alphatec Hldgs Inc

Ticker not mapped · held by 28 managers

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025

Reported value

$370.7M

Holders

+28 new · −0 exited

Holders’ est. mark

—

Need a prior quarter

Largest holder

$71.8M

Linden Advisors LP

Notable conviction

Share of each notable manager’s 13F book.

Fidelity0.0% · $5.29M
State Street0.0% · $5.23M

Who holds it

Notable only

Investor	Shares	Value	Est. mark	Change
Linden Advisors LP	69.9M	$71.8M	—	New
VOYA INVESTMENT MANAGEMENT LLC	65.4M	$67.3M	—	New
BRAIDWELL LP	61.6M	$63.4M	—	New
Jump Financial, LLC	20.3M	$20.8M	—	New
AQR Arbitrage LLC	19.6M	$20.1M	—	New
CAPSTONE INVESTMENT ADVISORS, LLC	18.8M	$19.3M	—	New
Calamos Advisors LLC	16.7M	$17.1M	—	New
BlackRock, Inc.	15.2M	$15.6M	—	New
SILVERBACK ASSET MANAGEMENT LLC	14.3M	$14.6M	—	New
ABSOLUTE INVESTMENT ADVISERS, LLC	11.8M	$12M	—	New
SSI INVESTMENT MANAGEMENT LLC	5.8M	$5.93M	—	New
Fidelity	5.16M	$5.29M	—	New
State Street	5.11M	$5.23M	—	New
BNP PARIBAS FINANCIAL MARKETS	4.96M	$5.08M	—	New
MORGAN STANLEY	4.79M	$4.9M	—	New
CITIGROUP INC	4.5M	$4.6M	—	New
Jefferies Financial Group Inc.	3.55M	$3.67M	—	New
JPMORGAN CHASE & CO	4.7M	$3.36M	—	New
SHENKMAN CAPITAL MANAGEMENT INC	2.63M	$2.76M	—	New
Invesco Ltd.	2M	$2.05M	—	New
Ares Systematic Credit Ltd	1.9M	$1.96M	—	New
JANE STREET GROUP, LLC	1.77M	$1.89M	—	New
Catalyst Capital Advisors LLC	700K	$720.1K	—	New
SMH CAPITAL ADVISORS INC	717	$716.6K	—	New
MILLENNIUM MANAGEMENT LLC	350K	$359.5K	—	New
VIRTUS ADVISERS, LLC	15K	$15.4K	—	New
Alken Asset Management Ltd	120	$122	—	New
Erste Asset Management GmbH	0	$0	—	New

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.