13F

Stock

Ciena Corp

CIEN · held by 9 managers

Reported value

$27.9M

Holders

9

+2 new · −1 exited

Holders’ est. mark

$2.85M

Price effect on 4 books still in the name

Largest holder

$13.5M

PEAK6 LLC

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
PEAK6 LLC166.3K$13.5MHeld
BARCLAYS PLC157.8K$12.8M$2.69MAdded$5.07M
Sanctuary Advisors, LLC6.07K$493.5K$110.2KAdded$174.8K
Swiss Life Asset Management Ltd3.68K$299.4KNew
NWAM LLC2.82K$256.8KHeld
Savant Capital, LLC2.92K$237.2KNew
DANSKE BANK A/S1.75K$142.2K$36.6KCut−$707.2K
Leonteq Securities AG864$70.3K$19.1KAdded$15.7K
Essential Partners LLC635$51.6KHeld

Who left

Positions as of Q2 2025. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.