Phio Pharmaceuticals Corp. (PHIO) Stock Price History
Historical prices from 2011 to 2026
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PHIO Historical Performance
Short-Term Returns
PHIO Stock Price Trajectory (2011–2026)
As of May 8, 2026, Phio Pharmaceuticals Corp. (PHIO) trades at $1.14, representing a -44.1% return over the past year. The stock has delivered a -99.6% total return over five years (-66.9% CAGR), reflecting challenging market conditions.
The stock reached its all-time high of $999,999.00 on March 9, 2015. From this peak, PHIO has corrected -100.0%, currently trading 27% below its 200-day moving average, suggesting potential weakness.
When compared to Healthcare sector peers SRPT (-43.4% 1Y), ARWR (+496.9% 1Y), and ALNY (+7.0% 1Y), PHIO has underperformed the peer group average. Compare PHIO vs SRPT →
PHIO Historical Price Data (2025–2026)
Showing 30 of 3,650 recordsLoading full history…
| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-05-07 | 1.17 | 1.17 | 1.14 | 1.14 | 98K | -0.87% |
| 2026-05-06 | 1.15 | 1.18 | 1.14 | 1.15 | 147K | +1.77% |
| 2026-05-05 | 1.18 | 1.19 | 1.13 | 1.13 | 14K | -2.59% |
| 2026-05-04 | 1.14 | 1.18 | 1.13 | 1.16 | 213K | +1.75% |
| 2026-05-01 | 1.22 | 1.22 | 1.13 | 1.14 | 308K | -6.56% |
| 2026-04-30 | 1.22 | 1.23 | 1.19 | 1.22 | 80K | +3.39% |
| 2026-04-29 | 1.20 | 1.21 | 1.18 | 1.18 | 62K | -1.67% |
| 2026-04-28 | 1.22 | 1.22 | 1.20 | 1.20 | 59K | -0.83% |
| 2026-04-27 | 1.21 | 1.22 | 1.20 | 1.21 | 86K | +1.68% |
| 2026-04-24 | 1.23 | 1.24 | 1.18 | 1.19 | 229K | -3.25% |
| 2026-04-23 | 1.26 | 1.26 | 1.22 | 1.23 | 186K | -1.60% |
| 2026-04-22 | 1.24 | 1.27 | 1.24 | 1.25 | 81K | 0.00% |
| 2026-04-21 | 1.26 | 1.28 | 1.24 | 1.25 | 93K | -1.57% |
| 2026-04-20 | 1.29 | 1.30 | 1.25 | 1.27 | 88K | -2.68% |
| 2026-04-17 | 1.29 | 1.31 | 1.27 | 1.30 | 100K | +1.16% |
| 2026-04-16 | 1.33 | 1.33 | 1.27 | 1.29 | 141K | -2.27% |
| 2026-04-15 | 1.27 | 1.33 | 1.25 | 1.32 | 135K | +2.33% |
| 2026-04-14 | 1.24 | 1.30 | 1.22 | 1.29 | 238K | +4.03% |
| 2026-04-13 | 1.23 | 1.27 | 1.21 | 1.24 | 161K | +2.48% |
| 2026-04-10 | 1.26 | 1.26 | 1.21 | 1.21 | 185K | -3.20% |
| 2026-04-09 | 1.25 | 1.28 | 1.25 | 1.25 | 60K | -3.85% |
| 2026-04-08 | 1.28 | 1.30 | 1.25 | 1.30 | 130K | +4.84% |
| 2026-04-07 | 1.27 | 1.27 | 1.24 | 1.24 | 83K | -1.59% |
| 2026-04-06 | 1.27 | 1.29 | 1.24 | 1.26 | 157K | -1.56% |
| 2026-04-02 | 1.26 | 1.31 | 1.26 | 1.28 | 92K | -1.54% |
| 2026-04-01 | 1.22 | 1.35 | 1.22 | 1.30 | 474K | +6.56% |
| 2026-03-31 | 1.24 | 1.26 | 1.21 | 1.22 | 205K | +1.67% |
| 2026-03-30 | 1.25 | 1.25 | 1.18 | 1.20 | 516K | -4.76% |
| 2026-03-27 | 1.28 | 1.29 | 1.23 | 1.26 | 286K | 0.00% |
| 2026-03-26 | 1.28 | 1.35 | 1.26 | 1.26 | 421K | -1.56% |
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Start ComparisonPHIO — Frequently Asked Questions
Quick answers to the most common questions about buying PHIO stock.
How has PHIO stock performed recently?
PHIO declined -44.1% over the past year, below its 5-year annualized CAGR of -66.9%. The stock trades below its 200-day moving average, reflecting the downtrend.
What is PHIO's all-time high price?
Phio Pharmaceuticals Corp. reached $999999.00 on 2015-03-09. The 52-week high is $4.19. Current 1-year return of -44.1% places the stock further from historical peaks.
Where can I download PHIO historical price data?
This page provides PHIO daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 2011-2026, downloadable in CSV format.