Other US listings · PTIX · stock
Protagenic Therapeutics, Inc.\new (PTIX) stock price history
Every Other US listings trading session of Protagenic Therapeutics, Inc.\new from Apr 27, 2021 to Jul 17, 2026: 1,312 daily bars, adjusted for splits and dividends, with minute bars arriving as capture begins. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
PTIX adjusted close, 2021 to 2026
- $194.32
- All time high, 2021
- $6.20
- 52 week high, $0.1400 low
- 1,312
- Daily sessions since 2021
Last updated Jul 17, 2026, the last stored session. Refreshes after each trading day. Full 2021 to 2026 series and minute bars.
PTIX key facts
- Protagenic Therapeutics, Inc.\new (PTIX) closed at $0.2600 on Jul 17, 2026 on Other US listings.
- PTIX's all time high close is $194.32, set on May 11, 2021; its all time low close is $0.1900 on Jul 8, 2026.
- PTIX's 52 week range is $0.1400 to $6.20.
- PTIX returned -92.6% over the year to Jul 17, 2026 and -99.8% over five years.
- Since Apr 27, 2021 PTIX returned -100%, -69.4% a year compounded.
- PTIX's deepest drawdown was -99.9% from May 11, 2021 to Jul 8, 2026.
- DataCedar holds 1,312 daily sessions of PTIX history from Apr 27, 2021, adjusted for splits and dividends, served by the API under a key.
PTIX price chart, 2021 to 2026
PTIX returns
Price return from the last close on or before the window start to Jul 17, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -36.6% |
| 3 months | -54.4% |
| 6 months | -55.9% |
| Year to date | -80.9% |
| 1 year | -92.6% |
| 3 years | -99.1% |
| 5 years | -99.8% |
| 10 years | n/a |
| Since Apr 27, 2021 | -99.8% |
| Compound annual growth, 5.2 years | -69.4% |
PTIX records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $194.32 on May 11, 2021
- All time low close
- $0.1900 on Jul 8, 2026
- 52 week high
- $6.20 on Aug 21, 2025
- 52 week low
- $0.1400 on Jul 10, 2026
- Deepest drawdown
- -99.9% from May 11, 2021 to Jul 8, 2026, not yet recovered
- Best single session
- +266.3% on May 19, 2025
- Worst single session
- -43.1% on Jan 2, 2026
- Volatility, 1 year annualised
- 181.7%
- Sessions closing higher, 1 year
- 37%
- Best calendar year
- 2023, -38%
- Worst calendar year
- 2025, -81%
PTIX price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 2021 starts on Apr 27, 2021; 2026 runs to Jul 17, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $1.26 | $1.27 | $0.1400 | $0.2600 | -80.0% | 3.8M | 135 |
| 2025 | $7.41 | $14.28 | $1.12 | $1.30 | -81.0% | 317.7M | 250 |
| 2024 | $12.88 | $26.18 | $6.16 | $6.86 | -50.5% | 2.3M | 252 |
| 2023 | $25.76 | $35.28 | $9.52 | $13.86 | -38.1% | 156.8K | 250 |
| 2022 | $78.40 | $82.88 | $18.48 | $22.40 | -71.1% | 233.1K | 251 |
| 2021 | $172.93 | $273.84 | $74.48 | $77.56 | n/a | 5.8M | 174 |
PTIX monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| July 2026 | $0.2600 | -33.7% |
| June 2026 | $0.3920 | -27.8% |
| May 2026 | $0.5430 | -38.3% |
| April 2026 | $0.8800 | +29.8% |
| March 2026 | $0.6780 | +45.8% |
| February 2026 | $0.4650 | -2.3% |
| January 2026 | $0.4760 | -63.4% |
| December 2025 | $1.30 | -39.0% |
| November 2025 | $2.13 | -17.1% |
| October 2025 | $2.57 | -25.1% |
| September 2025 | $3.43 | -4.7% |
| August 2025 | $3.60 | +22.4% |
About the PTIX data
Daily bars. 1,312 sessions from Apr 27, 2021 to Jul 17, 2026, one row per Other US listings trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Not stored for this listing yet. Minute history is captured forward from the day collection begins for a symbol and is never backfilled.
Time and currency. Session dates are Other US listings trading days; minute timestamps are UTC. Prices are in USD. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Apr 27, 2021, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/PTIX/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Other US listings
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Common questions
PTIX share price history
