A detailed history of David A. Siegel (Two Sigma Advisers, LP) transactions in Alphatec Holdings, Inc. stock. As of the latest transaction made, Two Sigma Advisers, LP holds 83,500 shares of ATEC stock, worth $780,725. This represents 0.0% of its overall portfolio holdings.

Number of Shares
83,500
Previous 12,700 557.48%
Holding current value
$780,725
Previous $132,000 252.27%
% of portfolio
0.0%
Previous 0.0%

Shares

19 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2024

Nov 14, 2024

BUY
$5.45 - $11.87 $385,860 - $840,396
70,800 Added 557.48%
83,500 $465,000
Q2 2024

Aug 14, 2024

SELL
$9.49 - $14.26 $200,239 - $300,886
-21,100 Reduced 62.43%
12,700 $132,000
Q1 2024

May 15, 2024

SELL
$12.8 - $16.78 $1.34 Million - $1.75 Million
-104,400 Reduced 75.54%
33,800 $466,000
Q4 2023

Feb 14, 2024

SELL
$8.89 - $15.36 $2.93 Million - $5.06 Million
-329,600 Reduced 70.46%
138,200 $2.09 Million
Q3 2023

Nov 14, 2023

SELL
$12.4 - $18.8 $6.24 Million - $9.46 Million
-503,000 Reduced 51.81%
467,800 $6.07 Million
Q2 2023

Aug 14, 2023

BUY
$14.32 - $18.03 $3.05 Million - $3.83 Million
212,700 Added 28.06%
970,800 $17.5 Million
Q1 2023

May 15, 2023

BUY
$11.83 - $16.02 $3.7 Million - $5 Million
312,400 Added 70.09%
758,100 $11.8 Million
Q4 2022

Feb 14, 2023

BUY
$8.91 - $12.35 $3.28 Million - $4.54 Million
367,700 Added 471.41%
445,700 $5.5 Million
Q3 2022

Nov 14, 2022

BUY
$6.57 - $9.74 $427,707 - $634,074
65,100 Added 504.65%
78,000 $682,000
Q2 2022

Aug 15, 2022

BUY
$6.36 - $13.08 $82,044 - $168,732
12,900 New
12,900 $84,000
Q4 2021

Feb 14, 2022

SELL
$10.57 - $13.23 $4.96 Million - $6.21 Million
-469,700 Closed
0 $0
Q3 2021

Nov 15, 2021

SELL
$11.83 - $15.79 $1.3 Million - $1.73 Million
-109,800 Reduced 18.95%
469,700 $5.73 Million
Q2 2021

Aug 16, 2021

BUY
$13.75 - $17.6 $1.77 Million - $2.27 Million
128,700 Added 28.55%
579,500 $8.88 Million
Q1 2021

May 17, 2021

BUY
$13.13 - $18.78 $4.4 Million - $6.29 Million
334,900 Added 288.96%
450,800 $7.12 Million
Q4 2020

Feb 16, 2021

BUY
$6.37 - $14.52 $3,185 - $7,260
500 Added 0.43%
115,900 $1.68 Million
Q3 2020

Nov 16, 2020

SELL
$4.43 - $6.94 $120,938 - $189,462
-27,300 Reduced 19.13%
115,400 $766,000
Q2 2020

Aug 14, 2020

BUY
$3.05 - $5.59 $30,500 - $55,900
10,000 Added 7.54%
142,700 $671,000
Q1 2020

May 15, 2020

BUY
$2.26 - $7.47 $118,649 - $392,175
52,500 Added 65.46%
132,700 $458,000
Q4 2019

Feb 14, 2020

BUY
$4.77 - $7.65 $382,553 - $613,530
80,200 New
80,200 $569,000

Others Institutions Holding ATEC

About Alphatec Holdings, Inc.


  • Ticker ATEC
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Medical Devices
  • Shares Outstandng 104,656,000
  • Market Cap $979M
  • Description
  • Alphatec Holdings, Inc., a medical technology company, designs, develops, and advances technologies for the surgical treatment of spinal disorders. The company offers SafeOp Neural InformatiX System, an Alpha InformatiX product platform designed to reduce the risk of intraoperative nerve injury; Sigma transforaminal lumbar interbody fusion pedic...
More about ATEC
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