Bank of Montreal
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Bank of Montreal’s AtaiBeckley Inc ATAI Stock Holding History

Bank of Montreal’s Portfolio ATAI Stock Details ATAI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$101K Buy
19,110
+180
+1% +$758 ﹤0.01% 3234
2026
Q1 		$67K Buy
+18,930
New +$71.3K ﹤0.01% 3229
2024
Q2 		– Sell
-140,692
Closed -$283K – 3839
2024
Q1 		$283K Buy
+140,692
New +$259K ﹤0.01% 2822
2023
Q4 		– Sell
-971,455
Closed -$1.41M – 3966
2023
Q3 		$1.41M Buy
+971,455
New +$1.66M ﹤0.01% 1884
2022
Q3 		– Sell
-1,474,975
Closed -$5.44M – 4069
2022
Q2 		$5.44M Buy
+1,474,975
New +$6.03M ﹤0.01% 1376

Other funds holding ATAI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
DTC
Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
CS
Candriam SCA Strassen, Luxembourg, Luxembourg $22.2B AUM 58.34% 1-Year Est. Return

Bank of Montreal's ATAI Position: Q2 2026 in Review

Bank of Montreal increased its AtaiBeckley Inc (ATAI) stake by 0.95% in Q2 2026, buying an estimated $758 and bringing the position to 19,110 shares worth $101K. The position accounts for ﹤0.01% of the portfolio, ranked #3234.

Bank of Montreal first reported a position in ATAI in Q2 2022 and has held it in 5 quarters since. The position peaked at $5.44M in Q2 2022. 242 funds tracked by Wall St. Rank hold ATAI as of Q2 2026.

  • Bank of Montreal held 19,110 shares of AtaiBeckley Inc worth $101K as of Q2 2026.
  • Bank of Montreal bought 180 AtaiBeckley Inc shares in Q2 2026, an estimated $758.
  • AtaiBeckley Inc made up ﹤0.01% of Bank of Montreal's portfolio in Q2 2026, its #3234 holding.
  • Bank of Montreal first reported a position in AtaiBeckley Inc in Q2 2022 and has held it in 5 quarters since.
  • Bank of Montreal's AtaiBeckley Inc position peaked at $5.44M in Q2 2022.
  • 242 funds tracked by Wall St. Rank held AtaiBeckley Inc as of Q2 2026.

Based on Bank of Montreal's 13F filing for Q2 2026, filed 12 Aug 2026.