greeksoup/ stocks
Stocks / United States / CIEN / Holders

Ciena Corp. 13F holders

Of the 44 funds followed here, 12 reported a position in Ciena Corp. in a 13F for the quarter ended 30 June 2026. The largest: FMR LLC, 19.1 million shares worth $9.38 billion, 0.4% of its reported book. New this quarter: Alyeska. Sold out: Lone Pine Capital, Whale Rock Capital Management.

FundSharesValueOf its bookChange on the quarterStatusQuarter endedFiling
FMR LLC19,113,538$9.38 billion0.4%-2,096,218trimmed30 June 202613F
Geode Capital Management3,370,462$1.65 billion0.1%-695,097trimmed30 June 202613F
Norges Bank1,703,155$835.5 million0.1%held30 June 202613F
Citadel Advisors1,328,564$651.7 million0.1%+491,429added30 June 202613F
Atreides Management688,521$337.8 million2.4%+11,714added30 June 202613F
Capital Research Global Investors656,554$322.1 million0.0%-2,093,496trimmed30 June 202613F
Point72 Asset Management375,916$184.4 million0.2%-360,939trimmed30 June 202613F
Millennium Management233,120$114.4 million0.0%-2,996trimmed30 June 202613F
Alyeska220,966$108.4 million0.3%+220,966new30 June 202613F
Renaissance Technologies184,774$90.6 million0.1%+86,974added30 June 202613F
Bridgewater Associates101,038$49.6 million0.2%-42,808trimmed30 June 202613F
Two Sigma Investments24,100$11.8 million0.0%+17,714added30 June 202613F
Lone Pine Capital0$00.0%-809,522exited30 June 202613F
Whale Rock Capital Management0$00.0%-231,267exited30 June 202613F

Value is what the fund reported. Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.

Schedule 13D and 13G filed on the name, last twelve months

FiledScheduleWhoHoldingOf the classEvent dateRule or purposeFiling
3 September 202613G/AJpmorgan Chase & Co. and 1 other5.6 million3.9%31 August 2026passive, institutional (13d-1(b))EDGAR
6 August 202613G/AFmr Llc and 3 others19.1 million13.5%30 June 2026passive, institutional (13d-1(b))EDGAR
29 April 202613GVanguard Portfolio Management and 1 other7.4 million5.2%31 March 2026passive, institutional (13d-1(b))EDGAR
29 April 202613GVanguard Capital Management and 1 other10.6 million7.5%31 March 2026passive, institutional (13d-1(b))EDGAR
24 April 202613G/ABlackRock, Inc. and 1 other11.3 million8.0%31 March 2026passive, institutional (13d-1(b))EDGAR
26 March 202613G/AThe Vanguard Group and 1 other00.0%13 March 2026passive, institutional (13d-1(b))EDGAR
21 January 202613GJpmorgan Chase & Co. and 1 other10.9 million7.7%31 December 2025passive, institutional (13d-1(b))EDGAR
4 December 202513G/ABlackRock, Inc. and 1 other14.5 million10.3%30 November 2025passive, institutional (13d-1(b))EDGAR

A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder. Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short.

Fails to deliver

Settlement dateShares failedPriceFile
21 August 2026487$392.48SEC
10 August 20264$412.39SEC
7 August 20262,070$403.76SEC
6 August 202675$408.83SEC
3 August 20261,200$377.05SEC
21 July 2026418$378.77SEC
17 July 20261,486$388.81SEC
16 July 202659$418.46SEC

Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period. Largest in the window: 2,070 on 7 August 2026. A fail is an operational fact about settlement, not a position.

Source

Each fund's 13F-HR on EDGAR, linked per row; positions matched to CIEN by CUSIP from the SEC's own fails-to-deliver files; Schedule 13D and 13G from the company's own filing index, each read to confirm the company is the issuer named.

The same record on your computer

GreekSoup is also a free program for your own computer. It reads these same filings for the names you follow, refreshed as they land, with no account. One pasted line installs it.

Install