Nasdaq Stockholm · SUMMAS · stock
Summa Defence Oyj (SUMMAS) stock price history
Every Nasdaq Stockholm trading session of Summa Defence Oyj from Apr 2, 2015 to Sep 28, 2026: 2,888 daily bars, adjusted for splits and dividends, with minute bars from Sep 17, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
SUMMAS adjusted close, 2015 to 2026
- SEK 17,178
- All time high, 2015
- SEK 50.00
- 52 week high, SEK 1.33 low
- 2,888
- Daily sessions since 2015
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2015 to 2026 series and minute bars.
SUMMAS key facts
- Summa Defence Oyj (SUMMAS) closed at SEK 2.60 on Sep 28, 2026 on Nasdaq Stockholm.
- SUMMAS's all time high close is SEK 17,178, set on Dec 10, 2015; its all time low close is SEK 1.89 on Sep 15, 2026.
- SUMMAS's 52 week range is SEK 1.33 to SEK 50.00.
- SUMMAS returned -94.8% over the year to Sep 28, 2026 and -96.5% over five years.
- Over ten years SUMMAS returned -100%, -54.2% a year compounded.
- SUMMAS's deepest drawdown was -100.0% from Dec 10, 2015 to Sep 15, 2026.
- DataCedar holds 2,888 daily sessions of SUMMAS history from Apr 2, 2015 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
SUMMAS price chart, 2015 to 2026
SUMMAS returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -47.0% |
| 3 months | -59.8% |
| 6 months | -76.4% |
| Year to date | -88.7% |
| 1 year | -94.8% |
| 3 years | -95.3% |
| 5 years | -96.5% |
| 10 years | -100.0% |
| Since Apr 2, 2015 | -100.0% |
| Compound annual growth, 11.5 years | -52.8% |
SUMMAS records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- SEK 17,178 on Dec 10, 2015
- All time low close
- SEK 1.89 on Sep 15, 2026
- 52 week high
- SEK 50.00 on Sep 29, 2025
- 52 week low
- SEK 1.33 on Sep 15, 2026
- Deepest drawdown
- -100.0% from Dec 10, 2015 to Sep 15, 2026, not yet recovered
- Best single session
- +129.6% on Mar 15, 2019
- Worst single session
- -49.7% on Sep 14, 2026
- Volatility, 1 year annualised
- 136.5%
- Sessions closing higher, 1 year
- 35%
- Best calendar year
- 2022, +59%
- Worst calendar year
- 2020, -75%
SUMMAS 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. 2015 starts on Apr 2, 2015; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | SEK 23.20 | SEK 28.80 | SEK 1.33 | SEK 2.60 | -88.7% | 7.9M | 186 |
| 2025 | SEK 39.20 | SEK 208.00 | SEK 13.10 | SEK 23.00 | -45.2% | 4.9M | 249 |
| 2024 | SEK 53.10 | SEK 64.10 | SEK 23.60 | SEK 42.00 | -20.9% | 134.4K | 251 |
| 2023 | SEK 76.00 | SEK 98.90 | SEK 35.50 | SEK 53.10 | -29.8% | 260.5K | 251 |
| 2022 | SEK 47.50 | SEK 125.00 | SEK 30.00 | SEK 75.60 | +59.2% | 1.7M | 253 |
| 2021 | SEK 140.93 | SEK 152.22 | SEK 42.20 | SEK 47.50 | -66.2% | 864.6K | 253 |
| 2020 | SEK 571.66 | SEK 603.08 | SEK 124.65 | SEK 140.74 | -75.4% | 1.2M | 252 |
| 2019 | SEK 459.23 | SEK 1,193 | SEK 261.05 | SEK 571.66 | +56.9% | 1.2M | 247 |
| 2018 | SEK 1,420 | SEK 2,684 | SEK 257.27 | SEK 364.42 | -74.1% | 107.4K | 252 |
| 2017 | SEK 4,642 | SEK 7,313 | SEK 1,177 | SEK 1,409 | -69.4% | 74.5K | 253 |
| 2016 | SEK 7,481 | SEK 10,944 | SEK 4,313 | SEK 4,609 | -36.6% | 19.2K | 253 |
| 2015 | SEK 21,434 | SEK 27,567 | SEK 6,719 | SEK 7,273 | n/a | 1.8K | 188 |
SUMMAS monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | SEK 2.60 | -44.3% |
| August 2026 | SEK 4.66 | -15.4% |
| July 2026 | SEK 5.51 | -18.6% |
| June 2026 | SEK 6.77 | +3.2% |
| May 2026 | SEK 6.56 | -46.4% |
| April 2026 | SEK 12.24 | +12.3% |
| March 2026 | SEK 10.90 | -9.9% |
| February 2026 | SEK 12.10 | -28.0% |
| January 2026 | SEK 16.80 | -27.0% |
| December 2025 | SEK 23.00 | -3.4% |
| November 2025 | SEK 23.80 | -27.5% |
| October 2025 | SEK 32.85 | -28.6% |
About the SUMMAS data
Daily bars. 2,888 sessions from Apr 2, 2015 to Sep 28, 2026, one row per Nasdaq Stockholm 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. Stored from Sep 17, 2026 forward, most recent session Sep 28, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are Nasdaq Stockholm trading days; minute timestamps are UTC. Prices are in SEK. 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 2, 2015, 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/SUMMAS/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Nasdaq Stockholm
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Common questions
SUMMAS share price history
