Bank of Montreal’s Ciena CIEN Stock Holding History

Bank of Montreal’s Portfolio CIEN Stock Details CIEN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$7.36M	Buy	+15,000	New	+$7.65M	﹤0.01%	1254
2015 Q2	–	Sell	-10,000	Closed	-$193K	–	3941
2015 Q1	$193K	Buy	+10,000	New	+$199K	﹤0.01%	2378
2013 Q3	–	Sell	-200,000	Closed	-$3.89M	–	3797
2013 Q2	$3.89M	Buy	+200,000	New	+$3.33M	0.01%	825

Other funds holding CIEN

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

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

Bank of Montreal increased its Ciena (CIEN) stake by 30% in Q2 2026, buying an estimated $12.5M and bringing the position to 105,944 shares worth $52M. The position accounts for 0.02% of the portfolio, ranked #596.

Bank of Montreal first reported a position in CIEN in Q2 2013 and has held it in 53 quarters since. 843 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

Bank of Montreal held 105,944 shares of Ciena worth $52M as of Q2 2026.
Bank of Montreal bought 24,598 Ciena shares in Q2 2026, an estimated $12.5M.
Ciena made up 0.02% of Bank of Montreal's portfolio in Q2 2026, its #596 holding.
Bank of Montreal first reported a position in Ciena in Q2 2013 and has held it in 53 quarters since.
843 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

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