David Nierenberg is Director at FLOTEK INDUSTRIES INC/CN/ (FTK). They have made 77 open-market trades across 12 companies since 2006, most recently 2025-03-28.
57 open-market purchases totalling $26.9M since 2006, against 20 sales. Across 44 scored buys the stock is down 8.4% at ninety days, and 13.2 points behind the S&P over the same stretch.
44 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 43% | 36% | 45% |
| Avg Move | -2.7% | -1.8% | -8.4% |
| Alpha | -18.3% | -3.8% | -13.2% |
| Scored | 44 | 44 | 44 |
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 83% | 67% | 67% |
| Avg Move | -12.5% | -0.7% | +0.3% |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PBPB | BUY | 2025-03-28 | 2025-03-31 | $9.36 | $415K | -10.8% | -14.6% | +29.2% |
| PBPB | BUY | 2025-01-07 | 2025-01-10 | $9.23 | $70K | +29.7% | +40.9% | -8.0% |
| PBPB | BUY | 2024-12-18 | 2024-12-20 | $9.36 | $44K | +6.0% | +18.1% | +1.7% |
| FTK | BUY | 2023-12-14 | 2023-12-15 | $3.72 | $72K | +3.1% | -10.3% | +1.1% |
| FTK | BUY | 2023-12-11 | 2023-12-13 | $3.47 | $261K | +0.6% | -6.7% | -21.5% |
| FTK | SELL | 2023-06-07 | 2023-06-09 | $0.63 | $945K | -2.3% | +0.0% | +6.5% |
| FTK | BUY | 2020-11-30 | 2020-12-02 | $2.05 | $177K | +4.0% | -11.6% | +0.4% |
| FTK | BUY | 2020-11-23 | 2020-11-25 | $1.99 | $563K | +11.1% | -2.8% | +11.1% |
| FTK | BUY | 2020-09-11 | 2020-09-15 | $2.48 | $433K | +5.0% | +13.4% | -11.1% |
| FTK | BUY | 2020-09-08 | 2020-09-10 | $2.43 | $240K | +13.0% | +6.5% | -11.5% |
| FTK | BUY | 2020-09-01 | 2020-09-03 | $2.40 | $730K | +4.3% | +3.5% | -16.0% |
| FTK | BUY | 2020-08-20 | 2020-08-24 | $2.00 | $2.7M | +4.3% | +17.8% | -9.1% |
| HWCC | BUY | 2020-03-16 | 2020-03-17 | $2.00 | $800K | -9.7% | -5.6% | +21.8% |
| RVSB | BUY | 2020-03-13 | 2020-03-17 | $4.98 | $299K | -1.2% | -5.0% | +0.6% |
| FTK | BUY | 2020-03-11 | 2020-03-13 | $0.98 | $1.8M | +3.9% | -12.2% | +5.9% |
| FTK | BUY | 2019-09-13 | 2019-09-16 | $2.50 | $134K | -19.8% | -27.0% | -28.5% |
| FTK | BUY | 2019-09-13 | 2019-09-16 | $2.51 | $284K | -19.8% | -27.0% | -28.5% |
| FTK | BUY | 2019-09-12 | 2019-09-12 | $2.45 | $225K | -19.8% | -19.4% | -33.7% |
| FTK | BUY | 2019-09-11 | 2019-09-12 | $2.40 | $111K | -19.8% | -19.4% | -33.7% |
| FTK | BUY | 2019-09-10 | 2019-09-12 | $2.30 | $136K | -19.8% | -19.4% | -33.7% |
| FTK | BUY | 2019-09-10 | 2019-09-12 | $2.39 | $642K | -19.8% | -19.4% | -33.7% |
| RVSP | BUY | 2019-09-04 | 2019-09-04 | $6.85 | $137K | N/A | N/A | N/A |
| FTK | BUY | 2019-06-07 | 2019-06-11 | $3.59 | $740K | -7.7% | -14.7% | -39.7% |
| FTK | BUY | 2019-06-06 | 2019-06-06 | $3.42 | $137K | +4.6% | -9.7% | -40.4% |
| FTK | BUY | 2019-06-05 | 2019-06-06 | $3.43 | $167K | +4.6% | -9.7% | -40.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
| RST |
| 16,229 |
| $487K |
| HWCC | 64,216 | $340K |
| RVSP | 100,879 | — |
| MDTH | 481,732 | — |
| PSAI | 841,044 | — |
| AACC | 475,728 | — |
| Total | $117.5M |
Shares reported on the most recent Form 4, priced at the 2025-03-31 close. 4 holdings could not be priced and are excluded from the total.
| Scored | 6 | 6 | 6 |