686 hedge funds and large institutions have $20.3B invested in Ciena in 2025 Q3 according to their latest regulatory filings, with 179 funds opening new positions, 174 increasing their positions, 261 reducing their positions, and 48 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

22% more funds holding

Funds holding: 562686 (+124)

0.98% less ownership

Funds ownership: 99.63%98.65% (-0.98%)

33% less repeat investments, than reductions

Existing positions increased: 174 | Existing positions reduced: 261

Holders
686
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
16
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$419M
Puts
$220M
Net Calls
Net Calls Change

Top Sellers

1 -$221M
2 -$213M
3 -$150M
4
IAM
Ion Asset Management
Israel
-$102M
5
SM
Senvest Management
New York
-$80.2M