CIEN Ciena Corporation
Ciena Corporation (CIEN) Institutional Ownership
What the institutions did with CIEN last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended September 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| GEODE CAPITAL MANAGEMENT, LLC | 3.4M | 22.0% |
| DIMENSIONAL FUND ADVISORS LP | 1.1M | 7.4% |
| Bank of New York Mellon Corp | 785.9K | 5.1% |
| Amundi | 748.4K | 4.9% |
| DEUTSCHE BANK AG\ | 678.3K | 4.4% |
| Pictet Asset Management Holding SA | 512.2K | 3.3% |
| CITIGROUP INC | 439.5K | 2.9% |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | 388.8K | 2.5% |
| Mitsubishi UFJ Asset Management Co., Ltd. | 368.2K | 2.4% |
| Robeco Institutional Asset Management B.V. | 332.3K | 2.2% |
| Sumitomo Mitsui Trust Group, Inc. | 327.3K | 2.1% |
| Assenagon Asset Management S.A. | 266.4K | 1.7% |
| BARCLAYS PLC | 252.7K | 1.6% |
| FengHe Fund Management Pte. Ltd. | 221.2K | 1.4% |
| Amanah Holdings Trust | 200.0K | 1.3% |
| Williams Jones Wealth Management, LLC. | 187.6K | 1.2% |
| Allspring Global Investments Holdings, LLC | 165.9K | 1.1% |
| PRINCIPAL FINANCIAL GROUP INC | 148.9K | 1.0% |
| Aberdeen Group plc | 134.7K | 0.9% |
| TRUIST FINANCIAL CORP | 134.1K | 0.9% |
| Russell Investments Group, Ltd. | 133.8K | 0.9% |
| LPL Financial LLC | 125.7K | 0.8% |
| North Growth Management Ltd. | 116.0K | 0.8% |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | 108.8K | 0.7% |
| Swedbank AB | 100.8K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| FengHe Fund Management Pte. Ltd. | Increased | 51.7K | 221.2K | +169.5K |
| Assenagon Asset Management S.A. | Reduced | 428.0K | 266.4K | -161.6K |
| CITIGROUP INC | Increased | 296.5K | 439.5K | +143.0K |
| Allspring Global Investments Holdings, LLC | Increased | 30.7K | 165.9K | +135.2K |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Sold Out | 133.8K | 0 | -133.8K |
| TRUIST FINANCIAL CORP | Increased | 6.8K | 134.1K | +127.4K |
| Aberdeen Group plc | Increased | 19.6K | 134.7K | +115.1K |
| DEUTSCHE BANK AG\ | Increased | 575.0K | 678.3K | +103.3K |
| Pictet Asset Management Holding SA | Increased | 414.7K | 512.2K | +97.5K |
| EXCHANGE TRADED CONCEPTS, LLC | Increased | 21.6K | 95.0K | +73.3K |
| Amundi | Increased | 675.1K | 748.4K | +73.3K |
| DekaBank Deutsche Girozentrale | New | 0 | 62.8K | +62.8K |
| REAVES W H & CO INC | New | 0 | 59.7K | +59.7K |
| Analyst IMS Investment Management Services Ltd. | Increased | 11.8K | 68.2K | +56.4K |
| KBC Group NV | Reduced | 78.4K | 25.2K | -53.1K |
| J. Safra Sarasin Holding AG | Increased | 26.7K | 74.7K | +48.0K |
| Temasek Holdings (Private) Ltd | Increased | 13.3K | 56.7K | +43.4K |
| Russell Investments Group, Ltd. | Reduced | 175.0K | 133.8K | -41.2K |
| Bank of New York Mellon Corp | Reduced | 825.5K | 785.9K | -39.6K |
| OFI INVEST ASSET MANAGEMENT | Increased | 1.5K | 40.9K | +39.4K |
| LPL Financial LLC | Reduced | 164.5K | 125.7K | -38.8K |
| DDD Partners, LLC | Increased | 674 | 39.2K | +38.6K |
| M & L Capital Management Ltd | Increased | 62.9K | 100.6K | +37.7K |
| Private Advisory Group LLC | Increased | 756 | 35.6K | +34.9K |
| Sumitomo Mitsui Trust Group, Inc. | Reduced | 357.4K | 327.3K | -30.1K |
| Cullen/Frost Bankers, Inc. | Increased | 321 | 27.3K | +27.0K |
| BARCLAYS PLC | Reduced | 278.1K | 252.7K | -25.4K |
| Mitsubishi UFJ Asset Management Co., Ltd. | Increased | 343.0K | 368.2K | +25.2K |
| GF FUND MANAGEMENT CO. LTD. | Sold Out | 23.0K | 0 | -23.0K |
| Concurrent Investment Advisors, LLC | Reduced | 28.8K | 7.1K | -21.6K |
| Calamos Advisors LLC | Increased | 22.2K | 43.4K | +21.2K |
| Swiss Life Asset Management Ltd | Increased | 29.6K | 50.3K | +20.7K |
| Investment Research Partners LLC | Reduced | 20.8K | 763 | -20.1K |
| Calamos Wealth Management LLC | New | 0 | 18.9K | +18.9K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 1.2M | 1.1M | -18.0K |
| PFA Pension, Forsikringsaktieselskab | Reduced | 95.5K | 78.4K | -17.1K |
| Fideuram Asset Management (Ireland) dac | Increased | 11.7K | 28.8K | +17.1K |
| Convergence Investment Partners, LLC | Sold Out | 16.6K | 0 | -16.6K |
| PRINCIPAL FINANCIAL GROUP INC | Reduced | 165.3K | 148.9K | -16.4K |
| CenterBook Partners LP | Increased | 3.1K | 19.0K | +15.9K |
| Oak Thistle LLC | Increased | 5.2K | 19.4K | +14.2K |
| VESTOR CAPITAL, LLC | Reduced | 15.1K | 1.1K | -14.0K |
| Achmea Investment Management B.V. | New | 0 | 13.7K | +13.7K |
| Robeco Institutional Asset Management B.V. | Increased | 319.3K | 332.3K | +13.0K |
| Cambridge Investment Research Advisors, Inc. | Reduced | 19.4K | 6.4K | -12.9K |
| FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A. | Increased | 1.7K | 13.6K | +11.8K |
| OPPENHEIMER ASSET MANAGEMENT INC. | Increased | 16.3K | 27.7K | +11.4K |
| Oak Harvest Investment Services | Reduced | 12.5K | 2.1K | -10.4K |
| PRINCETON CAPITAL MANAGEMENT LLC | New | 0 | 10.4K | +10.4K |
| MACKENZIE FINANCIAL CORP | Increased | 45.1K | 55.4K | +10.3K |
| Atlatl Advisers LLC | Reduced | 12.0K | 1.7K | -10.3K |
| Crossmark Global Holdings, Inc. | Increased | 9.3K | 19.2K | +9.9K |
| SANDERS MORRIS HARRIS LLC | New | 0 | 9.7K | +9.7K |
| NATIXIS | Increased | 28.8K | 38.4K | +9.7K |
| TECTONIC ADVISORS LLC | Increased | 13.1K | 22.7K | +9.5K |
| Cornerstone Advisors, LLC | Increased | 14.0K | 23.4K | +9.4K |
| PATTON FUND MANAGEMENT, INC. | Sold Out | 9.3K | 0 | -9.3K |
| D.A. DAVIDSON & CO. | New | 0 | 9.0K | +9.0K |
| Savant Capital, LLC | Increased | 3.5K | 12.4K | +8.9K |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | Increased | 380.0K | 388.8K | +8.8K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.