Balu Balakrishnan is CEO & President at POWER INTEGRATIONS INC (POWI). They have made 140 open-market trades across 1 company since 2006, most recently 2026-05-28.
CIK 0001182405
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 140 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| POWI | 279,516 | $12.4M |
Shares reported on the most recent Form 4, priced at the 2026-05-29 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| POWI | SELL | 2026-05-28 | 2026-05-29 | $86.44 | $10.7M | -11.3% | -6.0% | -34.2% |
| POWI | SELL | 2026-05-26 | 2026-05-28 | $81.72 | $9.7M | -13.6% | -8.7% | -36.6% |
| POWI | SELL | 2026-05-21 | 2026-05-26 | $70.71 | $3.8M | -12.0% | -3.2% | -39.3% |
| POWI | SELL | 2026-02-09 | 2026-02-10 | $46.82 | $532K | -2.5% | -0.8% | +58.9% |
| POWI | SELL | 2026-02-03 | 2026-02-05 | $44.75 | $451K | +0.2% | +2.9% | +70.8% |
| POWI | SELL | 2026-01-29 | 2026-02-02 | $46.59 | $260K | +0.4% | +1.0% | +56.6% |
| POWI | SELL | 2025-04-02 | 2025-04-04 | $51.19 | $977K | +7.6% | +21.1% | +42.6% |
| POWI | SELL | 2025-02-11 | 2025-02-13 | $58.36 | $612K | +7.7% | -3.4% | -8.3% |
| POWI | SELL | 2025-02-10 | 2025-02-11 | $58.26 | $701K | +12.2% | -3.0% | +2.0% |
| POWI | SELL | 2025-02-04 | 2025-02-06 | $60.64 | $1.5M | +2.2% | -5.9% | -20.2% |
| POWI | SELL | 2024-04-02 | 2024-04-03 | $68.61 | $1.3M | -4.7% | -2.7% | +0.1% |
| POWI | SELL | 2024-02-12 | 2024-02-14 | $78.08 | $1.4M | -7.0% | -7.4% | +2.2% |
| POWI | SELL | 2024-02-06 | 2024-02-08 | $73.39 | $843K | -14.4% | -12.4% | -9.7% |
| POWI | SELL | 2024-02-02 | 2024-02-06 | $74.51 | $938K | -0.9% | +3.3% | -5.9% |
| POWI | SELL | 2023-11-29 | 2023-12-01 | $77.60 | $7.4M | +6.8% | +5.1% | -6.3% |
| POWI | SELL | 2023-05-26 | 2023-05-30 | $89.85 | $3.9M | +6.3% | +7.3% | -6.1% |
| POWI | SELL | 2023-04-04 | 2023-04-05 | $80.66 | $1.6M | +0.1% | +1.7% | +17.7% |
| POWI | SELL | 2023-02-14 | 2023-02-15 | $83.75 | $2.0M | +0.1% | +2.4% | -3.4% |
| POWI | SELL | 2023-02-08 | 2023-02-09 | $84.59 | $1.8M | -0.2% | -1.3% | -0.8% |
| POWI | SELL | 2023-02-07 | 2023-02-08 | $83.02 | $977K | -3.4% | -3.4% | -6.7% |
| POWI | SELL | 2023-02-02 | 2023-02-06 | $90.89 | $1.2M | -1.9% | -0.8% | -5.6% |
| POWI | SELL | 2022-04-04 | 2022-04-05 | $91.09 | $1.7M | -0.7% | -0.4% | -16.0% |
| POWI | SELL | 2022-02-14 | 2022-02-16 | $84.72 | $2.0M | -4.9% | +6.3% | -5.6% |
| POWI | SELL | 2022-02-07 | 2022-02-09 | $85.19 | $7.5M | +0.9% | +0.2% | -7.2% |
| POWI | SELL | 2022-02-02 | 2022-02-04 | $80.24 | $424K | +10.6% | +0.8% | -1.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.