Question 1

Does Tidal Investments own CIEN stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Tidal Investments holds 127,546 shares of CIEN (Ciena), worth $62.6M.

Question 2

How many shares of CIEN does Tidal Investments own?

Accepted Answer

As of its Q2 2026 13F, Tidal Investments holds 127,546 shares of CIEN (Ciena).

Question 3

What is Tidal Investments' CIEN position worth?

Accepted Answer

As of its Q2 2026 13F, Tidal Investments' CIEN position is worth $62.6M.

Question 4

Is Tidal Investments buying or selling CIEN?

Accepted Answer

In Q2 2026, Tidal Investments reduced its CIEN position by 14,600 shares (-10.3%).

Question 5

When did Tidal Investments first buy CIEN?

Accepted Answer

Tidal Investments first reported CIEN in its Q4 2023 13F and has listed it in 11 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	127,546	-10.3%	$62.6M	0.1%	$490.56	0
2026-Q1	Increased	142,146	+224.3%	$55.2M	0.1%	$388.23	57
2025-Q4	Increased	43,827	+3.0%	$10.2M	0.0%	$233.87	29
2025-Q3	Decreased	42,533	-2.4%	$6.2M	0.0%	$145.67	0
2025-Q2	Increased	43,584	+28.1%	$3.5M	0.0%	$81.33	33
2025-Q1	Increased	34,009	+9.7%	$2.1M	0.0%	$60.43	28
2024-Q4	Increased	31,013	+1.9%	$2.6M	0.0%	$84.81	27
2024-Q3	Decreased	30,420	-31.9%	$1.9M	0.0%	$61.59	0