Tectonic Advisors’s Ciena CIEN Stock Holding History

Tectonic Advisors’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 Q3	$7.97M	Buy	22,655 +9,516	+72%	+$3.67M	0.37%	71
2026 Q2	$6.45M	Sell	13,139 -5,438	-29%	-$2.77M	0.31%	75
2026 Q1	$7.21M	Sell	18,577 -30,172	-62%	-$9.23M	0.38%	69
2025 Q4	$11.4M	Sell	48,749 -3,765	-7%	-$730K	0.6%	48
2025 Q3	$7.65M	Sell	52,514 -50,805	-49%	-$5.17M	0.42%	68
2025 Q2	$8.4M	Buy	103,319 +11,772	+13%	+$844K	0.49%	57
2025 Q1	$5.53M	Buy	91,547 +17,709	+24%	+$1.4M	0.35%	72
2024 Q4	$6.26M	Buy	73,838 +15,996	+28%	+$1.15M	0.41%	66
2024 Q3	$3.56M	Buy	+57,842	New	+$3.05M	0.23%	79

Other funds holding CIEN

Wealth Enhancement Advisory Services Plymouth, Minnesota $67.3B AUM 21.9% 1-Year Est. Return

Robeco Institutional Asset Management Rotterdam, Netherlands $83.2B AUM 35.34% 1-Year Est. Return

Assenagon Asset Management Senningerberg, Luxembourg $103B AUM 40.17% 1-Year Est. Return

North Growth Management Vancouver, British Columbia, Canada $743M AUM 74.29% 1-Year Est. Return

New York State Teachers Retirement System (NYSTRS) Albany, New York $52.9B AUM 36.03% 1-Year Est. Return

Fjarde Ap-fonden Stockholm, Sweden $19.4B AUM 31.69% 1-Year Est. Return

LMCG Investments Boston, Massachusetts $1.86B AUM 40.01% 1-Year Est. Return

ABN AMRO Investment Solutions Paris Cedex 008 $13.2B AUM 30.55% 1-Year Est. Return

MN Services Vermogensbeheer The Hague, Netherlands $13.4B AUM 37.34% 1-Year Est. Return

Czech National Bank Prague, Czech Republic $18.9B AUM 36.24% 1-Year Est. Return

Tectonic Advisors's CIEN Position: Q3 2026 in Review

Tectonic Advisors increased its Ciena (CIEN) stake by 72% in Q3 2026, buying an estimated $3.67M and bringing the position to 22,655 shares worth $7.97M. The position accounts for 0.37% of the portfolio, ranked #71.

Tectonic Advisors first reported a position in CIEN in Q3 2024 and has held it in 9 quarters since. The position peaked at $11.4M in Q4 2025. 227 funds tracked by Wall St. Rank hold CIEN as of Q3 2026.

Tectonic Advisors held 22,655 shares of Ciena worth $7.97M as of Q3 2026.
Tectonic Advisors bought 9,516 Ciena shares in Q3 2026, an estimated $3.67M.
Ciena made up 0.37% of Tectonic Advisors's portfolio in Q3 2026, its #71 holding.
Tectonic Advisors first reported a position in Ciena in Q3 2024 and has held it in 9 quarters since.
Tectonic Advisors's Ciena position peaked at $11.4M in Q4 2025.
227 funds tracked by Wall St. Rank held Ciena as of Q3 2026.

Based on Tectonic Advisors's 13F filing for Q3 2026, filed 22 Oct 2026.