CIEN Ciena Corporation
Ciena Corporation (CIEN) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| Jericho Capital Asset Management Long/Short Tech | Reduced | -1.09M | -66.1% | $537.0M | 2.3% | 83 |
| Lone Pine Capital Long/Short Growth | Sold Out | -809.5K | -100.0% | $397.1M | 0.0% | 83 |
| Whale Rock Capital Management Growth Tech | Sold Out | -231.3K | -100.0% | $113.5M | 0.0% | 75 |
| SCGE Management Long/Short Growth | New | +89.0K | — | $43.7M | 0.7% | 68 |
| Alyeska Investment Group, L.P. | New | +221.0K | — | $108.4M | 0.3% | 66 |
| Steadfast Capital Management Long/Short | Sold Out | -81.7K | -100.0% | $40.1M | 0.0% | 65 |
| Caxton Associates Macro | New | +117.9K | — | $57.8M | 1.1% | 64 |
| Qube Research & Technologies Ltd Quant | New | +282.9K | — | $138.8M | 0.2% | 64 |
| Rokos Capital Management Macro | Increased | +60.6K | +91.2% | $29.7M | 1.7% | 60 |
| Select Equity Group Long/Short Growth | Sold Out | -2.6K | -100.0% | $1.3M | 0.0% | 60 |
Most significant buyers
By move score, not size.
- SCGE Management
- Alyeska Investment Group, L.P.
- Caxton Associates
- Qube Research & Technologies Ltd
- Rokos Capital Management
Most significant sellers
By move score, not size.
- Jericho Capital Asset Management
- Lone Pine Capital
- Whale Rock Capital Management
- Steadfast Capital Management
- Select Equity Group
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Jericho Capital Asset Management | 1 | 561.5K | 1.7M | -1.09M | -66.1% | 2.3% | Reduced | 83 |
| Lone Pine Capital | 1 | 0 | 809.5K | -809.5K | -100.0% | 0.0% | Sold Out | 83 |
| Whale Rock Capital Management | 1 | 0 | 231.3K | -231.3K | -100.0% | 0.0% | Sold Out | 75 |
| SCGE Management | 1 | 89.0K | 0 | +89.0K | — | 0.7% | New | 68 |
| Alyeska Investment Group, L.P. | 2 | 221.0K | 0 | +221.0K | — | 0.3% | New | 66 |
| Steadfast Capital Management | 2 | 0 | 81.7K | -81.7K | -100.0% | 0.0% | Sold Out | 65 |
| Caxton Associates | 3 | 117.9K | 0 | +117.9K | — | 1.1% | New | 64 |
| Qube Research & Technologies Ltd | 2 | 282.9K | 0 | +282.9K | — | 0.2% | New | 64 |
| Rokos Capital Management | 2 | 127.0K | 66.5K | +60.6K | +91.2% | 1.7% | Increased | 60 |
| Select Equity Group | 1 | 0 | 2.6K | -2.6K | -100.0% | 0.0% | Sold Out | 60 |
| Holocene Advisors, LP | 2 | 0 | 25.6K | -25.6K | -100.0% | 0.0% | Sold Out | 60 |
| D. E. Shaw & Co., Inc. | 1 | 133.2K | 8.9K | +124.3K | +1394.6% | 0.0% | Increased | 58 |
| WORLDQUANT MILLENNIUM ADVISORS LLC | 2 | 10.1K | 0 | +10.1K | — | 0.0% | New | 58 |
| Quadrature Capital | 3 | 53.3K | 0 | +53.3K | — | 0.3% | New | 58 |
| Voloridge Investment Management | 2 | 24.3K | 0 | +24.3K | — | 0.1% | New | 58 |
| Atreides Management | 1 | 688.5K | 676.8K | +11.7K | +1.7% | 3.0% | Increased | 57 |
| Jain Global | 3 | 37.4K | 0 | +37.4K | — | 0.3% | New | 57 |
| Weiss Asset Management | 2 | 2.5K | 0 | +2.5K | — | 0.0% | New | 56 |
| Discovery Capital Management | 2 | 4.0K | 0 | +4.0K | — | 0.1% | New | 56 |
| Capula Management | 2 | 391 | 0 | +391 | — | 0.0% | New | 56 |
| Man Group | 3 | 334.8K | 23.4K | +311.4K | +1331.6% | 0.3% | Increased | 55 |
| Squarepoint Ops LLC | 2 | 167.3K | 3.7K | +163.5K | +4368.1% | 0.2% | Increased | 55 |
| Armistice Capital | 3 | 0 | 8.1K | -8.1K | -100.0% | 0.0% | Sold Out | 55 |
| Winton Group | 4 | 30.2K | 0 | +30.2K | — | 0.5% | New | 55 |
| Sona Asset Management | 3 | 0 | 4.0K | -4.0K | -100.0% | 0.0% | Sold Out | 55 |
| Magnetar Capital | 2 | 769 | 0 | +769 | — | 0.0% | New | 54 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 184.8K | 97.8K | +87.0K | +88.9% | 0.1% | Increased | 54 |
| Point72 Asset Management, L.P. | 1 | 210.5K | 544.7K | -334.1K | -61.3% | 0.2% | Reduced | 54 |
| Aristeia Capital | 2 | 0 | 1.2K | -1.2K | -100.0% | 0.0% | Sold Out | 54 |
| Y-Intercept | 4 | 26.5K | 0 | +26.5K | — | 0.3% | New | 54 |
| Tudor Investment Corporation | 2 | 0 | 1.2K | -1.2K | -100.0% | 0.0% | Sold Out | 53 |
| Hudson Bay Capital Management | 3 | 920 | 0 | +920 | — | 0.0% | New | 53 |
| Schonfeld Strategic Advisors | 3 | 8.3K | 0 | +8.3K | — | 0.0% | New | 53 |
| TWO SIGMA INVESTMENTS, LP | 2 | 9.5K | 3.5K | +6.0K | +172.5% | 0.0% | Increased | 53 |
| J. Goldman & Co. | 3 | 5.2K | 0 | +5.2K | — | 0.1% | New | 53 |
| Verition Fund Management | 2 | 446 | 42.1K | -41.6K | -98.9% | 0.0% | Reduced | 52 |
| Capital Fund Management | 3 | 51.5K | 17.5K | +34.1K | +194.7% | 0.2% | Increased | 52 |
| MILLENNIUM MANAGEMENT LLC | 2 | 166.4K | 90.7K | +75.7K | +83.5% | 0.1% | Increased | 51 |
| Alphadyne Asset Management | 3 | 855 | 0 | +855 | — | 0.0% | New | 51 |
| CenterBook Partners | 4 | 3.1K | 0 | +3.1K | — | 0.1% | New | 51 |
| Lighthouse Investment Partners | 3 | 544 | 0 | +544 | — | 0.0% | New | 51 |
| Parallax Volatility Advisers | 3 | 0 | 1.2K | -1.2K | -100.0% | 0.0% | Sold Out | 50 |
| Graham Capital Management | 3 | 201 | 0 | +201 | — | 0.0% | New | 49 |
| Senvest Management | 2 | 130.4K | 172.9K | -42.5K | -24.6% | 1.9% | Reduced | 46 |
| LMR Partners | 3 | 13.0K | 51.2K | -38.2K | -74.6% | 0.1% | Reduced | 46 |
| MARSHALL WACE, LLP | 2 | 45.1K | 126.0K | -80.9K | -64.2% | 0.0% | Reduced | 46 |
| Engineers Gate | 4 | 13.6K | 6.4K | +7.2K | +113.2% | 0.1% | Increased | 44 |
| CITADEL ADVISORS LLC | 1 | 214.1K | 140.4K | +73.6K | +52.4% | 0.1% | Increased | 44 |
| Bridgewater Associates | 1 | 101.0K | 143.8K | -42.8K | -29.8% | 0.2% | Reduced | 43 |
| Walleye Capital | 3 | 89.2K | 57.8K | +31.4K | +54.3% | 0.4% | Increased | 39 |
| Balyasny Asset Management L.P. | 2 | 372.4K | 323.4K | +49.0K | +15.2% | 0.4% | Increased | 36 |
| Quantbot Technologies | 4 | 3.3K | 7.4K | -4.1K | -55.7% | 0.1% | Reduced | 31 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 126.0K | 116.2K | +9.8K | +8.4% | 0.1% | Increased | 29 |
| Portolan Capital Management | 3 | 15.3K | 18.5K | -3.2K | -17.3% | 0.3% | Reduced | 29 |
| Woodline Partners LP | 2 | 30.9K | 27.6K | +3.3K | +11.9% | 0.0% | Increased | 28 |
| Gotham Asset Management, LLC | 2 | 113.0K | 121.3K | -8.3K | -6.8% | 0.1% | Reduced | 28 |
| AQR Capital Management | 3 | 1.1M | 977.1K | +75.1K | +7.7% | 0.2% | Increased | 26 |
| Chilton Investment Company | 2 | 891 | 966 | -75 | -7.8% | 0.0% | Reduced | 25 |
| Brevan Howard Capital Management | 3 | 15.2K | 12.9K | +2.2K | +17.3% | 0.1% | Increased | 25 |
| Voleon Capital Management | 3 | 1.4K | 1.4K | -38 | -2.7% | 0.0% | Reduced | 21 |
| Boothbay Fund Management | 4 | 38.9K | 38.0K | +954 | +2.5% | 0.4% | Increased | 20 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.