Thanks for pointing this out.
It made me double check. Here are the short positions according to (not free of charge) Stockwatch which certainly don’t match up with the other numbers even though there was a bit of an increase during the period in question. It’s probably safe to assume that neither report gives the true numbers.
Symbol
| Report Date
| Volume
| Change
| Shares Issued
| % Float
| T : NPK
| 2017-10-31
| 16,200
| 1,000
| 37,617,430
| 0.04
| T : NPK
| 2017-10-15
| 15,200
| 0
| 37,617,430
| 0.04
| T : NPK
| 2017-09-30
| 15,200
| 0
| 37,617,430
| 0.04
| T : NPK
| 2017-09-15
| 15,200
| -2,000
| 37,617,430
| 0.04
| T : NPK
| 2017-08-31
| 17,200
| 2,000
| 37,617,430
| 0.05
| T : NPK
| 2017-08-15
| 15,200
| 1,000
| 37,617,430
| 0.04
| T : NPK
| 2017-07-31
| 14,200
| -17,600
| 37,617,430
| 0.04
| T : NPK
| 2017-07-15
| 31,800
| -36,500
| 37,617,430
| 0.08
| T : NPK
| 2017-06-30
| 68,300
| 21,300
| 37,617,430
| 0.18
| T : NPK
| 2017-06-15
| 47,000
| 33,800
| 37,617,430
| 0.12
| T : NPK
| 2017-05-31
| 13,200
| 10,900
| 37,617,430
| 0.04
| T : NPK
| 2017-05-15
| 2,300
| -1,500
| 37,617,430
| 0.01
| T : NPK
| 2017-04-30
| 3,800
| 2,500
| 37,617,430
| 0.01
| T : NPK
| 2017-04-15
| 1,300
| 0
| 37,617,430
| 0.00
| T : NPK
| 2017-03-31
| 1,300
| -500
| 37,617,430
| 0.00
| T : NPK
| 2017-03-15
| 1,800
| 500
| 37,617,430
| 0.00
| T : NPK
| 2017-02-28
| 1,300
| -11,600
| 37,617,430
| 0.00
| T : NPK
| 2017-02-15
| 12,900
| 12,600
| 37,617,430
| 0.03
| |