Security Snapshot

Alphatec Holdings, Inc. - Common Stock, par value $0.0001 per share (ATEC) Institutional Ownership

CUSIP: 02081G201

13F Institutional Holders and Ownership History from Q1 2016 to Q3 2026

13F reference period

Q3 2026

Institutions Reporting

154

Shares (Excl. Options)

54.32MFull value: 54,319,246 · shares · 30 Sep 2026

Price

$10.32

The headline uses the Q3 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended.

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Latest holder snapshot 5 signals
Portfolio coverage rank
0%
Share change
+7,323,619
Value change
+$76,655,925
Number of holders
154
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
148,491,921
SEC-reported price per share
$11.25
Insider filing price
$11.25
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

Key facts

  • ATEC - Alphatec Holdings, Inc. - Common Stock, par value $0.0001 per share is tracked under CUSIP 02081G201.
  • 154 institutions reported positions in Q3 2026.
  • 1 significant owner is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 266 to 154 between Q2 2026 and Q3 2026.
  • SEC-reported value moved from
    $966.61MFull value: $966,608,697 · USD · 30 Jun 2026
    to
    $560.61MFull value: $560,609,890 · USD · 30 Sep 2026
    .

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 154 institutions filings for Q3 2026.

Open SEC evidence

Security key

02081G201

13F reference period

Q3 2026

13F holders

154

13D/G owners

1

CIK / CUSIP context first

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
1
Security
ATEC
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Squadron Capital LLC 8.9% $259,293,623 13,215,781 Jennifer N. Pritzker 15 Dec 2025
As of 30 Sep 2026, 154 institutional investors reported holding
54.32MFull value: 54,319,246 · shares · 30 Sep 2026
shares of Alphatec Holdings, Inc. - Common Stock, par value $0.0001 per share (ATEC). This represents 37% of the company’s total
148.49MFull value: 148,491,921 · shares · Stored outstanding share count
outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
31%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
AMERICAN CENTURY COMPANIES INC 4.3% 6,433,302 -1.4% 0.03% $66,391,696
VANGUARD CAPITAL MANAGEMENT LLC 3.5% 5,216,227 +1.8% 0% $53,831,463
STATE STREET CORP 2.4% 3,574,463 +2.7% 0% $36,888,458
GEODE CAPITAL MANAGEMENT, LLC 2.2% 3,292,493 +3.2% 0% $33,985,497
MORGAN STANLEY 1.7% 2,494,619 +62% 0% $25,744,475
MARSHALL WACE, LLP 1.6% 2,360,025 0.02% $24,355,458
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 1.4% 2,117,084 +35% 0.01% $21,848,307
EMERALD ADVISERS, LLC 1.4% 2,099,368 -0.24% 0.59% $21,665,478
Cerity Partners LLC 1.3% 1,901,405 +1% 0.02% $19,622,497
Penn Capital Management Company, LLC 1.2% 1,769,971 +19% 1.3% $18,298,504
Aberdeen Group plc 1.2% 1,712,328 +44% 0.02% $17,671,225
Granite Investment Partners, LLC 1% 1,509,092 +24% 0.85% $15,573,829
RAYMOND JAMES FINANCIAL INC 1% 1,478,276 -9.8% 0% $15,255,808
PARADIGM CAPITAL MANAGEMENT INC/NY 0.95% 1,417,300 +30% 0.46% $14,626,536
EMERALD MUTUAL FUND ADVISERS TRUST 0.95% 1,408,962 +12% 0.59% $14,540,488
VANGUARD PORTFOLIO MANAGEMENT LLC 0.91% 1,355,385 +13% 0% $13,987,573
First Eagle Investment Management, LLC 0.7% 1,034,728 +3.8% 0.02% $10,678,393
DEUTSCHE BANK AG\ 0.61% 912,096 -1.4% 0% $9,412,830
VANGUARD FIDUCIARY TRUST CO 0.61% 899,429 +6.1% 0% $9,282,107
KING LUTHER CAPITAL MANAGEMENT CORP 0.46% 690,038 +1.4% 0.03% $7,121,192
Qube Research & Technologies Ltd 0.41% 611,573 +1041% 0.01% $6,311,433
Motley Fool Asset Management LLC 0.38% 569,046 -16% 0.22% $5,872,555
PANAGORA ASSET MANAGEMENT INC 0.36% 538,235 -31% 0.02% $5,554,585
CONGRESS ASSET MANAGEMENT CO 0.36% 532,069 +21% 0.04% $5,490,952
Amundi 0.35% 516,260 0% $5,327,803

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
43
Headline period
Q3 2026
Rows shown
1-25 of 43
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q3 54,319,246 $560,609,890 +$76,655,925 $10.32 154
2026 Q2 111,632,422 $966,608,697 -$38,587,378 $8.65 266
2026 Q1 113,165,272 $1,231,434,118 -$149,703,529 $10.88 284
2025 Q4 119,421,809 $2,512,526,352 +$234,953,104 $21.04 283
2025 Q3 108,131,166 $1,572,206,011 +$108,986,715 $14.54 269
2025 Q2 100,894,463 $1,119,970,530 +$110,166,950 $11.10 235
2025 Q1 90,896,433 $921,707,723 +$71,854,145 $10.14 229
2024 Q4 84,665,682 $777,612,878 +$17,311,717 $9.18 226
2024 Q3 82,952,438 $461,127,100 -$103,492,411 $5.56 212
2024 Q2 93,387,152 $975,892,590 +$16,871,194 $10.45 214
2024 Q1 91,603,639 $1,263,405,807 +$14,543,640 $13.79 221
2023 Q4 90,194,008 $1,363,122,567 +$315,244,959 $15.11 203
2023 Q3 69,651,493 $903,432,680 -$22,862,184 $12.97 197
2023 Q2 69,346,783 $1,246,643,684 +$192,282,709 $17.98 206
2023 Q1 58,955,439 $919,622,439 +$91,055,783 $15.60 180
2022 Q4 53,948,533 $666,376,152 +$42,733,511 $12.35 178
2022 Q3 51,212,100 $447,703,298 +$8,939,700 $8.74 158
2022 Q2 50,262,413 $328,716,139 -$25,412,480 $6.54 155
2022 Q1 52,926,640 $608,103,433 -$3,097,119 $11.50 158
2021 Q4 53,379,624 $610,594,414 +$742,182 $11.43 168
2021 Q3 53,122,080 $647,555,735 +$102,423,130 $12.19 162
2021 Q2 44,464,433 $681,071,254 +$7,084,913 $15.32 147
2021 Q1 43,986,567 $691,446,933 +$36,230,930 $15.79 154
2020 Q4 42,379,116 $615,344,983 +$251,413,241 $14.52 148
2020 Q3 24,935,808 $165,664,969 -$336,837 $6.64 96
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