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Alphatec (ATEC) Institutional Ownership

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$9.79 +0.04 (+0.41%)
Closing price 04:00 PM Eastern
Extended Trading
$9.83 +0.04 (+0.41%)
As of 04:34 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Alphatec (NASDAQ:ATEC)

Current
Institutional Ownership
Percentage
66.35%
Number of
Institutional Buyers
(last 12 months)
159
Total
Institutional Inflows
(last 12 months)
$362.35M
Number of
Institutional Sellers
(last 12 months)
95
Total
Institutional Outflows
(last 12 months)
$245.98M
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ATEC Institutional Buying and Selling by Quarter

Alphatec Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/14/2026Paradigm Capital Management Inc. NY1,088,200$9.41M0.3%N/A0.705%
8/10/2026 Great Lakes Advisors LLC280,161$2.42M0.0%N/A0.181%
8/6/2026 Bank of New York Mellon Corp357,406$3.09M0.0%N/A0.232%
7/10/2026 Handelsbanken Fonder AB49,400$427K0.0%N/A0.032%
7/10/2026 Redhawk Wealth Advisors Inc.19,412$168K0.0%+87.8%0.013%
7/9/2026 Atlas Brown Inc.12,800$111K0.0%N/A0.008%
7/9/2026 Valeo Financial Advisors LLC44,363$384K0.0%+7.2%0.029%
7/8/2026 Assenagon Asset Management S.A.161,238$1.40M0.0%-37.2%0.105%
6/18/2026Western Wealth Management LLC103,909$1.13M0.0%+20.9%0.068%
5/19/2026Western Wealth Management LLC103,909$1.13M0.0%+20.9%0.068%
5/19/2026Bank of America Corp DE2,560,971$27.86M0.0%+26.9%1.665%
5/18/2026California State Teachers Retirement System147,650$1.61M0.0%+34.1%0.096%
5/18/2026Rock Springs Capital Management LP350,000$3.81M0.2%+15.7%0.228%
5/16/2026Quantinno Capital Management LP21,452$233K0.0%+34.4%0.014%
5/15/2026Entropy Technologies LP28,685$312K0.0%+127.8%0.019%
5/14/2026Healthcare of Ontario Pension Plan Trust Fund24,161$263K0.0%-88.1%0.016%
5/14/2026Renaissance Technologies LLC1,055,100$11.48M0.0%+21.3%0.686%
5/14/2026Arrowstreet Capital Limited Partnership507,017$5.52M0.0%+102.3%0.330%
5/14/2026Sei Investments Co.598,003$6.51M0.0%+62.2%0.389%
5/14/2026 Lido Advisors LLC10,612$115K0.0%N/A0.007%
5/14/2026 State of Wyoming14,302$156K0.0%+709.9%0.009%
5/13/2026 Cetera Investment Advisers35,468$386K0.0%+43.9%0.023%
5/13/2026 First Trust Advisors LP447,114$4.87M0.0%-18.1%0.291%
5/8/2026 PNC Financial Services Group Inc.318,319$3.46M0.0%+1.5%0.207%
5/6/2026 Independent Financial Group LLC39,650$431K0.0%N/A0.026%
5/5/2026 Bank of New York Mellon Corp328,595$3.58M0.0%-0.4%0.214%
5/5/2026Sanctuary Advisors LLC18,112$197K0.0%N/A0.012%
5/4/2026 Emerald Mutual Fund Advisers Trust1,156,826$12.59M0.6%+27.1%0.753%
5/4/2026 Emerald Advisers LLC1,807,307$19.66M0.6%+10.4%1.176%
5/4/2026 Principal Financial Group Inc.293,001$3.19M0.0%+166.9%0.191%
5/1/2026 Avid Wealth Partners LLC75,062$817K0.4%+29.1%0.050%
5/1/2026 Kornitzer Capital Management Inc. KS100,000$1.09M0.0%N/A0.066%
4/30/2026Hsbc Holdings PLC145,990$1.62M0.0%-19.2%0.096%
4/30/2026 Summit Securities Group LLC2,694$29K0.0%N/A0.002%
4/30/2026 Granite Investment Partners LLC1,195,156$13.00M0.8%+4.7%0.790%
4/27/2026 Y Intercept Hong Kong Ltd165,179$1.80M0.0%+119.2%0.109%
4/27/2026 Elevation Point Wealth Partners LLC23,217$253K0.0%N/A0.015%
4/21/2026 AA Financial Advisors LLC20,000$218K0.0%N/A0.013%
4/20/2026 Kestra Private Wealth Services LLC39,000$424K0.0%N/A0.026%
4/20/2026 OP Asset Management Ltd162,052$1.76M0.0%N/A0.107%
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4/20/2026 Assenagon Asset Management S.A.256,881$2.80M0.0%-73.7%0.170%
4/16/2026 SG Americas Securities LLC67,065$730K0.0%+4.2%0.044%
4/16/2026 Diversified Trust Co14,876$162K0.0%+17.6%0.010%
4/15/2026 Weatherly Asset Management L. P.38,333$417K0.0%N/A0.025%
3/20/2026Hsbc Holdings PLC180,790$3.81M0.0%-51.5%0.119%
3/17/2026Rockefeller Capital Management L.P.405,656$8.54M0.0%-3.6%0.268%
3/6/2026Hsbc Holdings PLC180,790$3.81M0.0%-51.5%0.119%
3/4/2026Pure Financial Advisors LLC24,576$517K0.0%-3.9%0.016%
2/19/2026Invesco Ltd.317,143$6.67M0.0%-12.5%0.213%
2/18/2026 Mercer Global Advisors Inc. ADV296,389$6.24M0.0%-3.5%0.200%
2/18/2026XTX Topco Ltd50,826$1.07M0.0%-43.2%0.034%
2/18/2026Voloridge Investment Management LLC15,242$321K0.0%N/A0.010%
2/18/2026Susquehanna Portfolio Strategies LLC32,375$681K0.0%N/A0.022%
2/18/2026Numerai GP LLC35,976$757K0.1%N/A0.024%
2/18/2026Occudo Quantitative Strategies LP269,798$5.68M0.4%+235.4%0.182%
2/18/2026Millennium Management LLC2,225,927$46.83M0.0%+292.2%1.498%
2/18/2026Janus Henderson Group PLC49,743$1.05M0.0%-51.1%0.033%
2/18/2026Gotham Asset Management LLC60,146$1.27M0.0%+137.1%0.040%
2/18/2026Engineers Gate Manager LP229,209$4.82M0.1%-27.2%0.154%
2/17/2026Freestone Grove Partners LP615,420$12.95M0.1%N/A0.414%
2/17/2026Schonfeld Strategic Advisors LLC125,816$2.65M0.0%-20.4%0.085%
2/17/2026AQR Capital Management LLC604,088$12.71M0.0%-0.7%0.407%
2/17/2026 Cetera Investment Advisers24,650$519K0.0%-7.8%0.017%
2/17/2026Jain Global LLC75,511$1.59M0.0%N/A0.051%
2/17/2026Trexquant Investment LP419,882$8.83M0.1%-5.5%0.283%
2/17/2026Jump Financial LLC277,700$5.84M0.1%-24.7%0.187%
2/17/2026Iron Triangle Partners LP1,285,685$27.05M3.1%N/A0.865%
2/17/2026Price T Rowe Associates Inc. MD93,651$1.97M0.0%+7.6%0.063%
2/17/2026Osaic Holdings Inc.135,761$2.86M0.0%+3.3%0.091%
2/17/2026 Russell Investments Group Ltd.289,529$6.09M0.0%-8.2%0.195%
2/17/2026State of Wisconsin Investment Board177,921$3.74M0.0%+409.9%0.120%
2/17/2026Captrust Financial Advisors63,921$1.35M0.0%+75.5%0.043%
2/17/2026Fred Alger Management LLC58,817$1.24M0.0%N/A0.040%
2/17/2026Graham Capital Management L.P.33,476$704K0.0%-36.2%0.023%
2/16/2026Squarepoint Ops LLC376,158$7.91M0.0%-36.7%0.253%
2/16/2026Verition Fund Management LLC140,355$2.95M0.0%+8.9%0.094%
2/16/2026 Panagora Asset Management Inc.237,754$5.00M0.0%+239.6%0.160%
2/16/2026Mariner LLC14,943$314K0.0%N/A0.010%
2/16/2026Next Century Growth Investors LLC2,418,298$50.88M3.5%+6.1%1.628%
2/16/2026Healthcare of Ontario Pension Plan Trust Fund203,000$4.27M0.0%-15.8%0.137%
2/16/2026Entropy Technologies LP12,593$265K0.0%-43.9%0.008%
2/16/2026 Arax Advisory Partners3,059$64K0.0%-46.2%0.002%
2/16/2026 Avid Wealth Partners LLC58,129$1.22M0.6%N/A0.039%
2/16/2026Barclays PLC209,266$4.40M0.0%+14.7%0.141%
2/13/2026 Stifel Financial Corp58,042$1.22M0.0%-5.6%0.039%
2/13/2026Morgan Stanley4,340,936$91.33M0.0%+22.0%2.922%
2/13/2026 Focused Alpha LLC40,220$846K0.2%N/A0.027%
2/13/2026 First Trust Advisors LP545,602$11.48M0.0%+22.4%0.367%
2/13/2026 FirstWave Capital Management LLC52,726$1.11M0.7%N/A0.035%
2/13/2026Birchview Capital LP18,058$380K0.2%-45.3%0.012%
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2/13/2026Charles Schwab Investment Management Inc.995,692$20.95M0.0%+3.8%0.670%
2/13/2026 State Street Corp2,889,240$60.79M0.0%+6.4%1.945%
2/13/2026Van ECK Associates Corp11,318$238K0.0%+26.1%0.008%
2/13/2026 Ieq Capital LLC58,642$1.23M0.0%+15.5%0.039%
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC265,330$5.58M0.0%-2.4%0.179%
2/13/2026Wells Fargo & Company MN141,807$2.98M0.0%+61.0%0.095%
2/13/2026Rhenman & Partners Asset Management AB20,000$421K0.0%+11.1%0.013%
2/13/2026Castleark Management LLC296,160$6.23M0.2%N/A0.199%
2/12/2026HRT Financial LP68,430$1.44M0.0%N/A0.046%
2/12/2026MetLife Investment Management LLC908,120$19.11M0.1%-17.4%0.611%


ATEC Institutional Ownership - Frequently Asked Questions

During the previous two years, 288 institutional investors and hedge funds held shares of Alphatec. The most heavily invested institutionals were Vanguard Group Inc. ($144.83M), American Century Companies Inc. ($92.13M), Morgan Stanley ($91.33M), State Street Corp ($60.79M), Nuveen LLC ($60.46M), Geode Capital Management LLC ($59.51M), and First Light Asset Management LLC ($55.68M).Learn more on Alphatec's institutional investors.

66.35% of Alphatec's stock is owned by institutional investors. Learn more on ATEC's institutional investor holdings.

Of the 256 institutional investors that purchased Alphatec's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Nuveen LLC ($13.40M), American Century Companies Inc. ($2.68M), Royal Bank of Canada ($2.35M), Tudor Investment Corp ET AL ($1.98M), Millennium Management LLC ($1.74M), Marshall Wace LLP ($1.37M), and Granite Investment Partners LLC ($1.37M).

Institutional investors have bought a total of 22,192,447 shares in the last 24 months. This purchase volume represents approximately $362.35M in transactions.

Of the 92 institutional investors that sold Alphatec's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Braidwell LP ($7.94M), Assenagon Asset Management S.A. ($817.11K), Lazard Asset Management LLC ($708.22K), Penn Capital Management Company LLC ($652.16K), Granite Investment Partners LLC ($579.83K), Hsbc Holdings PLC ($418.19K), and New York State Common Retirement Fund ($339.60K).

Institutional investors have sold a total of 15,858,101 shares in the last 24 months. This volume of shares sold represents approximately $245.98M in transactions.


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Institutional ownership data for NASDAQ:ATEC is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/14/2026. New 13F filings are added each quarter as they're published.
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