PI — IMPINJ INC
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-07-21.
Performance
Technicals
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Measured signals that fired on PI
| date | signal | measured base rate |
|---|---|---|
| 2026-08-04 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-08-03 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-07-01 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-05-26 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-04-22 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-04-17 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-20 | DIORIO CHRIS PH.D. CHIEF EXECUTIVE OFFICER | Shares withheld for tax | 1.5K | 159.73 | 235.9K |
| 2026-08-20 | Baker Cary CHIEF FINANCIAL OFFICER | Shares withheld for tax | 685 | 159.73 | 109.4K |
| 2026-08-20 | DIORIO CHRIS PH.D. CHIEF EXECUTIVE OFFICER | Option exercise | 3.8K | 0.00 | 0 |
| 2026-08-20 | Baker Cary CHIEF FINANCIAL OFFICER | Option exercise | 1.7K | 0.00 | 0 |
| 2026-08-17 | DIORIO CHRIS PH.D. CHIEF EXECUTIVE OFFICER | Gift 10b5-1 plan | 10.0K | 0.00 | 0 |
| 2026-08-10 | Baker Cary CHIEF FINANCIAL OFFICER | Open-market sale 10b5-1 plan | 1.4K | 185.00 | 264.4K |
| 2026-07-13 | DIORIO CHRIS PH.D. CHIEF EXECUTIVE OFFICER | Gift 10b5-1 plan | 10.0K | 0.00 | 0 |
| 2026-06-23 | DIORIO CHRIS PH.D. CHIEF EXECUTIVE OFFICER | Shares withheld for tax | 1.2K | 125.22 | 149.9K |
| 2026-06-23 | Baker Cary CHIEF FINANCIAL OFFICER | Shares withheld for tax | 424 | 125.22 | 53.1K |
| 2026-06-23 | Baker Cary CHIEF FINANCIAL OFFICER | Option exercise | 597 | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 443.0M | 4.3M |
| FMR LLC | 439.6M | 4.3M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 219.8M | 2.1M |
| STATE STREET CORP | 152.5M | 1.5M |
| Capital International Investors | 138.9M | 1.4M |
| VANGUARD CAPITAL MANAGEMENT LLC | 130.0M | 1.3M |
| SYLEBRA CAPITAL LLC | 116.3M | 1.1M |
| Capital World Investors | 104.3M | 1.0M |
| AMERIPRISE FINANCIAL INC | 88.1M | 858.3K |
| AMERICAN CENTURY COMPANIES INC | 84.0M | 818.0K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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