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FORTALEZA ASSET MANAGEMENT INC
> MPWR
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2018 | MONOLITHIC POWER SYSTEMS INC | MPWR | 1,320 | -595 | 176,000 | -46,000 | $133.33 |
| 03/31/2018 | MONOLITHIC POWER SYSTEMS INC | MPWR | 1,915 | 0 | 222,000 | 7,000 | $115.93 |
| 12/31/2017 | MONOLITHIC POWER SYSTEMS INC | MPWR | 1,915 | 0 | 215,000 | 11,000 | $112.27 |
| 09/30/2017 | MONOLITHIC POWER SYSTEMS INC | MPWR | 1,915 | 0 | 204,000 | 19,000 | $106.53 |
| 06/30/2017 | MONOLITHIC POWER SYSTEMS INC | MPWR | 1,915 | 640 | 185,000 | 68,000 | $96.61 |
| 03/31/2017 | MONOLITHIC POWER SYSTEMS INC | MPWR | 1,275 | 0 | 117,000 | 13,000 | $91.76 |
| 12/31/2016 | MONOLITHIC POWER SYSTEMS INC | MPWR | 1,275 | 100 | 104,000 | -94,483,000 | $81.57 |
| 09/30/2016 | MONOLITHIC POWER SYSTEMS INC | MPWR | 1,175 | -800 | 94,587,000 | 94,543,000 | $80,499.57 |
| 03/31/2010 | MONOLITHIC POWER SYSTEMS INC | MPWR | 1,975 | -36,775 | 44,000 | -885,000 | $22.28 |
| 12/31/2009 | MONOLITHIC POWER SYSTEMS INC | MPWR | 38,750 | -1,650 | 929,000 | -18,000 | $23.97 |
| 09/30/2009 | MONOLITHIC POWER SYSTEMS INC | MPWR | 40,400 | 0 | 947,000 | 42,000 | $23.44 |
| 06/30/2009 | MONOLITHIC POWER SYSTEMS INC | MPWR | 40,400 | 40,400 | 905,000 | 905,000 | $22.40 |
| 03/31/2009 | MONOLITHIC POWER SYSTEMS INC | MPWR | 50,450 | 50,450 | 782,000 | 782,000 | $15.50 |
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