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ATEC · Alphatec Holdings, Inc.

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$9.29 -0.46 (-4.72%) At close · Aug 20
Market Cap
$1.47B
Shares
154.45M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 264
Total Value: $1,019,646,136
Total Shares: 117,878,778

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 264 13F filers · Δ vs Mar 31, 2026
Top Holder
9.6%
Sep 2023 → Jun 2026 · range 7.9% – 12.3%
+1.2 pts
Top 5
31.2%
Sep 2023 → Jun 2026 · range 28.1% – 35.8%
+2.8 pts
Top 10
45.6%
Sep 2023 → Jun 2026 · range 41.0% – 52.0%
+4.6 pts
HHI
309
Sep 2023 → Jun 2026 · range 253 – 390
Broadly held+44

Quarterly Activity

vs Mar 31, 2026
New
39
Increased
108
Decreased
82
Sold Out
61
Unchanged
35
Holder count: -22
Institutional value: -22.2%
Shares held: -2.1%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 275
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1350653 CUSIP 02081G201 13F (30d) 236 filings 235 filers Visit website Investor relations