Bank of Montreal’s Alphatec Holdings ATEC Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$3.55M Sell
326,297
-232,529
-42% -$3.39M ﹤0.01% 1446
2025
Q4
$11.8M Sell
558,826
-135,627
-20% -$2.51M ﹤0.01% 1050
2025
Q3
$10.1M Sell
694,453
-48,588
-7% -$676K ﹤0.01% 1045
2025
Q2
$8.25M Buy
743,041
+627,973
+546% +$7.21M ﹤0.01% 1063
2025
Q1
$1.17M Buy
+115,068
New +$1.24M ﹤0.01% 1745
2021
Q2
Sell
-1,590
Closed -$28K 3724
2021
Q1
$28K Sell
1,590
-6,968
-81% -$110K ﹤0.01% 3923
2020
Q4
$112K Buy
8,558
+6,464
+309% +$68.3K ﹤0.01% 3525
2020
Q3
$14K Sell
2,094
-1,454
-41% -$8.2K ﹤0.01% 3969
2020
Q2
$16K Buy
+3,548
New +$15.7K ﹤0.01% 3939
2020
Q1
Sell
-4,994
Closed -$35K 4091
2019
Q4
$35K Buy
4,994
+1,652
+49% +$10.6K ﹤0.01% 4010
2019
Q3
$17K Buy
3,342
+851
+34% +$4.42K ﹤0.01% 4166
2019
Q2
$11K Buy
+2,491
New +$9.29K ﹤0.01% 4477
2016
Q2
Sell
-101
Closed 4072
2016
Q1
$0 Hold
101
﹤0.01% 4175
2015
Q4
$0 Buy
+101
New +$341 ﹤0.01% 4206
2014
Q3
Sell
-136
Closed -$3K 4021
2014
Q2
$3K Buy
+136
New +$2.28K ﹤0.01% 4355

Other funds holding ATEC

Bank of Montreal's ATEC Position: Q1 2026 in Review

Bank of Montreal reduced its Alphatec Holdings (ATEC) stake by 42% in Q1 2026, selling an estimated $3.39M and leaving 326,297 shares worth $3.55M. The position accounts for ﹤0.01% of the portfolio, ranked #1446.

Bank of Montreal first reported a position in ATEC in Q2 2014 and has held it in 15 quarters since. The position peaked at $11.8M in Q4 2025. 285 funds tracked by Wall St. Rank hold ATEC as of Q1 2026.

  • Bank of Montreal held 326,297 shares of Alphatec Holdings worth $3.55M as of Q1 2026.
  • Bank of Montreal sold 232,529 Alphatec Holdings shares in Q1 2026, an estimated $3.39M.
  • Alphatec Holdings made up ﹤0.01% of Bank of Montreal's portfolio in Q1 2026, its #1446 holding.
  • Bank of Montreal first reported a position in Alphatec Holdings in Q2 2014 and has held it in 15 quarters since.
  • Bank of Montreal's Alphatec Holdings position peaked at $11.8M in Q4 2025.
  • 285 funds tracked by Wall St. Rank held Alphatec Holdings as of Q1 2026.

Based on Bank of Montreal's 13F filing for Q1 2026, filed 13 May 2026.