Renaissance Technologies (RenTech)'s NPKI Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC (Rentech)) currently holds 519,308 shares of NPK International Inc. (NPKI) worth $6.19 M, representing 0.01% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 49 quarters.
Based on 13F filings since 2013, Renaissance Technologies (RenTech) has maintained a long-term strategic position in NPKI, representing a significant commitment to this investment thesis. Largest addition occurred in Q1 2020, adding 650,161 shares. Largest reduction occurred in Q4 2015, reducing 844,697 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s NPK International (NPKI) Holding Value Over Time
Track share changes against reported price movement
Quarterly NPK International (NPKI) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -49,033 | Reduce 8.63% | 519,308 | $11.92 |
| Q3 2025 | -144,900 | Reduce 20.32% | 568,341 | $11.31 |
| Q2 2025 | -95,759 | Reduce 11.84% | 713,241 | $8.51 |
| Q1 2025 | +6,184 | Add 0.77% | 809,000 | $5.81 |
| Q4 2024 | -56,525 | Reduce 6.58% | 802,816 | $7.67 |
| Q3 2024 | +206,341 | Add 31.60% | 859,341 | $6.93 |
| Q2 2024 | +15,859 | Add 2.49% | 653,000 | $8.31 |
| Q1 2024 | -188,122 | Reduce 22.80% | 637,141 | $7.22 |
| Q4 2023 | +504,000 | Add 156.88% | 825,263 | $6.64 |
| Q3 2023 | -154,113 | Reduce 32.42% | 321,263 | $6.91 |
| Q2 2023 | +72,083 | Add 17.87% | 475,376 | $0.01 |
| Q1 2023 | -341,348 | Reduce 45.84% | 403,293 | $0.00 |
| Q4 2022 | +33,500 | Add 4.71% | 744,641 | $0.00 |
| Q3 2022 | +22,639 | Add 3.29% | 711,141 | $2.52 |
| Q2 2022 | +482,061 | Add 233.51% | 688,502 | $3.09 |
| Q1 2022 | +129,341 | Add 167.76% | 206,441 | $3.66 |
| Q4 2021 | +57,400 | Add 291.37% | 77,100 | $2.94 |
| Q3 2021 | -307,141 | Reduce 93.97% | 19,700 | $3.30 |
| Q2 2021 | -388,500 | Reduce 54.31% | 326,841 | $3.46 |
| Q1 2021 | -655,500 | Reduce 47.82% | 715,341 | $3.14 |
| Q4 2020 | +395,380 | Add 40.53% | 1.37 M | $1.92 |
| Q3 2020 | +405,441 | Add 71.13% | 975,461 | $1.05 |
| Q2 2020 | -236,141 | Reduce 29.29% | 570,020 | $2.23 |
| Q1 2020 | +650,161 | Add 416.77% | 806,161 | $0.90 |
| Q4 2019 | -110,900 | Reduce 41.55% | 156,000 | $6.27 |
| Q3 2019 | -225,600 | Reduce 45.81% | 266,900 | $7.62 |
| Q2 2019 | +5,500 | Add 1.13% | 492,500 | $7.42 |
| Q1 2019 | -222,441 | Reduce 31.35% | 487,000 | $9.16 |
| Q4 2018 | +147,091 | Add 26.16% | 709,441 | $6.87 |
| Q3 2018 | +105,350 | Add 23.05% | 562,350 | $10.35 |
| Q2 2018 | +187,500 | Add 69.57% | 457,000 | $10.85 |
| Q1 2018 | +73,608 | Add 37.58% | 269,500 | $8.10 |
| Q4 2017 | +132,292 | Add 208.01% | 195,892 | $8.60 |
| Q3 2017 | +63,600 | New Buy | 63,600 | $10.00 |
| Q1 2017 | -277,300 | Sold Out | 0 | $0.00 |
| Q4 2016 | +28,100 | Add 11.28% | 277,300 | $7.50 |
| Q3 2016 | -64,100 | Reduce 20.46% | 249,200 | $7.36 |
| Q2 2016 | -24,100 | Reduce 7.14% | 313,300 | $5.79 |
| Q1 2016 | +212,100 | Add 169.27% | 337,400 | $4.32 |
| Q4 2015 | -844,697 | Reduce 87.08% | 125,300 | $5.28 |
| Q3 2015 | +614,597 | Add 172.93% | 969,997 | $5.12 |
| Q2 2015 | +288,800 | Add 433.63% | 355,400 | $8.13 |
| Q1 2015 | +66,600 | New Buy | 66,600 | $9.11 |
| Q3 2014 | -579,400 | Sold Out | 0 | $0.00 |
| Q2 2014 | +217,252 | Add 59.99% | 579,400 | $12.46 |
| Q1 2014 | +143,948 | Add 65.97% | 362,148 | $11.45 |
| Q4 2013 | +74,300 | Add 51.63% | 218,200 | $12.29 |
| Q3 2013 | -4,500 | Reduce 3.03% | 143,900 | $12.66 |
| Q2 2013 | +148,400 | Add 0.00% | 148,400 | $10.99 |
Renaissance Technologies (RenTech)'s NPK International Investment FAQs
Renaissance Technologies (RenTech) first purchased NPK International Inc. (NPKI) in Q2 2013, acquiring 148,400 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies (RenTech) has held NPK International Inc. (NPKI) for 49 quarters since Q2 2013.
Renaissance Technologies (RenTech)'s largest addition to NPK International Inc. (NPKI) was in Q1 2020, adding 806,161 shares worth $723,000.
According to the latest 13F filing for Q4 2025, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC (Rentech), owns 519,308 shares of NPK International Inc. (NPKI), valued at approximately $6.19 M.
As of the Q4 2025 filing, NPK International Inc. (NPKI) represents approximately 0.01% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in NPK International Inc. (NPKI) was 1,370,841 shares, as reported at the end of Q4 2020.