| 19.58 Real-Time Quote |  +0.43 / +2.25%Today’s Change | 11.96 Today|||52-Week Range 19.95 | +24.71% Year-to-Date |
| Mutual fund holders | 52.69% |
| Other institutional | 51.95% |
| Individual stakeholders | 2.75% |
| 3/31/2013 | CITADEL ADVISORS LLC Bought 4.1 Million shares of Ciena Corp |
| 3/31/2013 | EMPIRE CAPITAL MANAGEMENT LLC Bought 2.3 Million shares of Ciena Corp |
| 3/31/2013 | THE BOSTON COMPANY ASSET MANAGEM... Bought 1.4 Million shares of Ciena Corp |
| Stockholder | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| BlackRock Fund Advisors | 7.43% | 7,544,138 | 112,860,304 | +328,904 | +4.56% |
| Platinum Asset Management Ltd. (I... | 6.59% | 6,686,200 | 100,025,552 | +10,000 | +0.15% |
| The Vanguard Group, Inc. | 5.76% | 5,847,080 | 87,472,317 | -73,859 | -1.25% |
| Citadel Advisors LLC | 5.05% | 5,130,106 | 76,746,386 | +4,120,428 | +408.09% |
| AllianceBernstein LP | 5.05% | 5,125,622 | 76,679,305 | +681,241 | +15.33% |
| The Dreyfus Corp. | 3.73% | 3,790,362 | 56,703,816 | +737,100 | +24.14% |
| Turner Investments LP | 3.72% | 3,777,393 | 56,509,799 | +983,923 | +35.22% |
| Parnassus Investments | 3.64% | 3,696,193 | 55,295,047 | -2,116 | -0.06% |
| SSgA Funds Management, Inc. | 3.58% | 3,635,296 | 54,384,028 | +25,588 | +0.71% |
| TIAA-CREF Investment Management L... | 2.73% | 2,770,449 | 41,445,917 | +155,648 | +5.95% |
| Mutual fund | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| CREF Stock Account | 2.55% | 2,590,708 | 38,756,992 | +341,472 | +15.18% |
| Parnassus Small Cap Fund | 1.97% | 2,000,000 | 29,920,000 | 0 | 0.00% |
| Fidelity Balanced Fund | 1.65% | 1,672,500 | 25,020,600 | 0 | 0.00% |
| Parnassus Fund | 1.60% | 1,625,000 | 24,310,000 | 0 | 0.00% |
| Fidelity VIP-Contrafund Portfolio | 1.59% | 1,616,891 | 24,188,689 | 0 | 0.00% |
| iShares Russell 2000 Index Fund | 1.54% | 1,566,552 | 23,435,618 | -25,431 | -1.60% |
| Vanguard Small Cap Index Fund | 1.42% | 1,438,703 | 21,522,997 | -228,127 | -13.69% |
| Vanguard Total Stock Market Index... | 1.37% | 1,391,370 | 20,814,895 | +57,691 | +4.33% |
| BlackRock Small Cap Growth Equity... | 1.23% | 1,248,500 | 18,677,560 | +114,200 | +10.07% |
| Vanguard Small Cap Growth Index F... | 1.19% | 1,205,068 | 18,027,817 | +33,938 | +2.90% |
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