Phio Pharmaceuticals Corp. (PHIO) Stock Price History
Historical prices from 2008 to 2026
- 1M
- -4.6%
- 3M
- -14.2%
- YTD
- -5.5%
- 1Y
- -56.4%
- 3Y
- -66.5%
- 5Y
- -66.3%
Loading 10-year price history...
PHIO Historical Performance
PHIO Annual Returns
Year-by-year price performance · 2008–2026
- 2008 annual price return
- -45.3%
- 2009 annual price return
- -23.7%
- 2010 annual price return
- -37.1%
- 2011 annual price return
- -69.2%
- 2012 annual price return
- +4182246.3%
- 2013 annual price return
- +0.0%
- 2014 annual price return
- -5.0%
- 2015 annual price return
- -76.1%
- 2016 annual price return
- -81.2%
- 2017 annual price return
- -22.8%
- 2018 annual price return
- -94.0%
- 2019 annual price return
- -51.1%
- 2020 annual price return
- -74.2%
- 2021 annual price return
- -64.4%
- 2022 annual price return
- -65.9%
- 2023 annual price return
- -83.1%
- 2024 annual price return
- -74.0%
- 2025 annual price return
- -44.7%
- 2026 annual price return
- +4.6%
PHIO Stock Price Trajectory (2008–2026)
As of June 22, 2026, Phio Pharmaceuticals Corp. (PHIO) trades at $1.03, representing a -56.4% return over the past year. The stock has delivered a -99.6% total return over five years (-66.3% 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 26% below its 200-day moving average, suggesting potential weakness.
When compared to Healthcare sector peers SRPT (-15.6% 1Y), ARWR (+423.8% 1Y), and ALNY (-11.0% 1Y), PHIO has underperformed the peer group average. Compare PHIO vs SRPT →
PHIO Historical Price Data · from 2008
Rows 1–50 of 4,598| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-06-18 | 1.09 | 1.09 | 1.03 | 1.03 | 222K | -4.63% |
| 2026-06-17 | 1.08 | 1.13 | 1.07 | 1.08 | 146K | +1.89% |
| 2026-06-16 | 1.09 | 1.12 | 1.06 | 1.06 | 191K | -3.64% |
| 2026-06-15 | 1.09 | 1.12 | 1.08 | 1.10 | 29K | +2.80% |
| 2026-06-12 | 1.07 | 1.09 | 1.07 | 1.07 | 103K | -0.93% |
| 2026-06-11 | 1.07 | 1.08 | 1.05 | 1.08 | 176K | +1.89% |
| 2026-06-10 | 1.08 | 1.10 | 1.06 | 1.06 | 190K | -1.85% |
| 2026-06-09 | 1.09 | 1.13 | 1.07 | 1.08 | 175K | -0.92% |
| 2026-06-08 | 1.07 | 1.10 | 1.05 | 1.09 | 225K | +2.83% |
| 2026-06-05 | 1.11 | 1.13 | 1.05 | 1.06 | 10K | -7.02% |
| 2026-06-04 | 1.14 | 1.15 | 1.09 | 1.14 | 81K | +2.70% |
| 2026-06-03 | 1.10 | 1.12 | 1.09 | 1.11 | 54K | -0.89% |
| 2026-06-02 | 1.11 | 1.13 | 1.10 | 1.12 | 99K | -0.88% |
| 2026-06-01 | 1.08 | 1.14 | 1.08 | 1.13 | 261K | +1.80% |
| 2026-05-29 | 1.14 | 1.14 | 1.11 | 1.11 | 101K | -2.63% |
| 2026-05-28 | 1.11 | 1.14 | 1.10 | 1.14 | 110K | +3.64% |
| 2026-05-27 | 1.08 | 1.12 | 1.07 | 1.10 | 131K | +1.85% |
| 2026-05-26 | 1.09 | 1.11 | 1.08 | 1.08 | 184K | -0.92% |
| 2026-05-22 | 1.09 | 1.13 | 1.09 | 1.09 | 0 | 0.00% |
| 2026-05-21 | 1.08 | 1.09 | 1.07 | 1.09 | 39K | +0.93% |
| 2026-05-20 | 1.07 | 1.08 | 1.06 | 1.08 | 56K | +1.89% |
| 2026-05-19 | 1.09 | 1.09 | 1.06 | 1.06 | 79K | -1.85% |
| 2026-05-18 | 1.06 | 1.10 | 1.06 | 1.08 | 121K | +0.93% |
| 2026-05-15 | 1.10 | 1.11 | 1.05 | 1.07 | 229K | -4.46% |
| 2026-05-14 | 1.13 | 1.15 | 1.10 | 1.12 | 108K | -2.61% |
| 2026-05-13 | 1.12 | 1.15 | 1.10 | 1.15 | 124K | +4.55% |
| 2026-05-12 | 1.11 | 1.11 | 1.08 | 1.10 | 147K | +1.85% |
| 2026-05-11 | 1.10 | 1.11 | 1.07 | 1.08 | 152K | +0.93% |
| 2026-05-08 | 1.14 | 1.15 | 1.04 | 1.07 | 322K | -6.14% |
| 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% |
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
DCA Calculator
See how regular investing compounds over time.
Peer Comparison
Compare growth, multiples, and margins vs sector.
PHIO — Frequently Asked Questions
Quick answers to the most common questions about buying PHIO stock.
How has PHIO stock performed recently?
PHIO declined -56.4% over the past year, below its 5-year annualized CAGR of -66.3%. 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 -56.4% 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 2008-2026, downloadable in CSV format.