| 55.12 Data as of May 17 |  +0.77 / +1.42%Today’s Change | 27.96 Today|||52-Week Range 59.84 | +39.83% Year-to-Date |
| Individual stakeholders | 43.90% |
| Other institutional | 37.88% |
| Mutual fund holders | 31.89% |
| 3/31/2013 | RIVERBRIDGE PARTNERS LLC Bought 457.0 Thousand shares of Proto Labs Inc |
| 3/31/2013 | ARBOR CAPITAL MANAGEMENT LLC Bought 327.0 Thousand shares of Proto Labs Inc |
| 3/31/2013 | FIRST TRUST ADVISORS LP Bought 298.5 Thousand shares of Proto Labs Inc |
| Stockholder | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| NBGE Manager LLC | 7.96% | 2,004,290 | 102,379,133 | -1,400,000 | -41.12% |
| Lord, Abbett & Co. LLC | 4.14% | 1,042,279 | 53,239,611 | +89,784 | +9.43% |
| MFS Investment Management, Inc. | 3.25% | 816,750 | 41,719,590 | +132,640 | +19.39% |
| Wasatch Advisors, Inc. | 3.14% | 789,389 | 40,321,990 | -26,715 | -3.27% |
| Champlain Investment Partners LLC | 2.77% | 697,885 | 35,647,966 | +78,270 | +12.63% |
| The Vanguard Group, Inc. | 2.73% | 688,111 | 35,148,710 | -3,120 | -0.45% |
| Capital Research & Management Co.... | 2.56% | 643,452 | 32,867,528 | 0 | 0.00% |
| Conestoga Capital Advisors LLC | 2.39% | 601,709 | 30,735,296 | +28,475 | +4.97% |
| Riverbridge Partners LLC | 1.82% | 456,988 | 23,342,947 | +456,988 | -- |
| Waddell & Reed Investment Managem... | 1.72% | 433,586 | 22,147,573 | -118,858 | -21.51% |
| Mutual fund | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| American Funds Small Cap World Fu... | 4.04% | 1,016,691 | 51,932,576 | +330,952 | +48.26% |
| Lord Abbett Developing Growth Fun... | 2.56% | 645,261 | 32,959,932 | +190,091 | +41.76% |
| Baron Small Cap Fund | 1.57% | 394,297 | 20,140,691 | -105,703 | -21.14% |
| Wasatch Small Cap Growth Fund | 1.46% | 366,273 | 18,709,225 | +56,696 | +18.31% |
| MFS New Discovery Fund | 1.24% | 312,860 | 15,980,889 | -18,410 | -5.56% |
| Conestoga Small Cap Fund | 1.05% | 263,000 | 13,434,040 | +8,000 | +3.14% |
| Fidelity Small Cap Growth Fund | 1.00% | 252,194 | 12,882,070 | -80,000 | -24.08% |
| Vanguard Small Cap Index Fund | 0.97% | 243,875 | 12,457,135 | +243,875 | -- |
| Vanguard Total Stock Market Index... | 0.77% | 192,921 | 9,854,405 | +192,921 | -- |
| AllianceBernstein Global Thematic... | 0.76% | 191,303 | 9,771,757 | -61,787 | -24.41% |
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