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Numeric Investors LLC
> PTCT
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 12/31/2017 | PTC THERAPEUTICS, INC. | PTCT | 0 | -470,982 | 0 | -9,424,000 | |
| 09/30/2017 | PTC THERAPEUTICS, INC. | PTCT | 470,982 | 470,982 | 9,424,000 | 9,424,000 | $20.01 |
| 06/30/2017 | PTC THERAPEUTICS, INC. | PTCT | 0 | -616,004 | 0 | -6,061,000 | |
| 03/31/2017 | PTC THERAPEUTICS, INC. | PTCT | 616,004 | 47,685 | 6,061,000 | -139,000 | $9.84 |
| 12/31/2016 | PTC THERAPEUTICS, INC. | PTCT | 568,319 | 568,319 | 6,200,000 | 6,200,000 | $10.91 |
| 09/30/2016 | PTC THERAPEUTICS, INC. | PTCT | 0 | -126,400 | 0 | -887,000 | |
| 06/30/2016 | PTC THERAPEUTICS, INC. | PTCT | 126,400 | 126,400 | 887,000 | 887,000 | $7.02 |
| 03/31/2016 | PTC THERAPEUTICS, INC. | PTCT | 0 | -12,600 | 0 | -408,000 | |
| 12/31/2015 | PTC THERAPEUTICS, INC. | PTCT | 12,600 | 12,600 | 408,000 | 408,000 | $32.38 |
| 09/30/2015 | PTC THERAPEUTICS, INC. | PTCT | 11,400 | 11,400 | 304,000 | 304,000 | $26.67 |
| 06/30/2015 | PTC THERAPEUTICS, INC. | PTCT | 14,800 | 14,800 | 712,000 | 712,000 | $48.11 |
| 03/31/2015 | PTC THERAPEUTICS, INC. | PTCT | 5,900 | 5,900 | 359,000 | 359,000 | $60.85 |
| 09/30/2014 | PTC THERAPEUTICS, INC. | PTCT | 0 | -259,593 | 0 | -6,786,000 | |
| 09/30/2014 | PTC THERAPEUTICS, INC. | PTCT | 0 | -259,593 | 0 | -6,786,000 | |
| 06/30/2014 | PTC THERAPEUTICS, INC. | PTCT | 259,593 | 259,593 | 6,786,000 | 6,786,000 | $26.14 |
| 03/31/2014 | PTC THERAPEUTICS, INC. | PTCT | 251,282 | 251,282 | 6,569,000 | 6,569,000 | $26.14 |
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