Closing prices for September 17, 2026
The series is stated in the current share scale after splits; dividends are not included in the price
| Date | Open | High | Low | Close | Volume, shares |
|---|---|---|---|---|---|
| September 17, 2026 | 384.45 | 386.68 | 377.36 | 381.17 | 2m |
| September 16, 2026 | 367.50 | 379.94 | 367.45 | 378.47 | 2m |
| September 15, 2026 | 378.37 | 381.48 | 362.55 | 367.70 | 3m |
| September 14, 2026 | 393.89 | 395.00 |
Based on reports through October 31, 2025
Synopsys sells the software chips are designed in — without it no modern chip would exist.
The electronic design automation market is split among two or three players, and the barrier here is not code but trust: an error in the tool means a defective silicon run worth millions. Engineers train on a particular environment for years, and changing vendor amounts to retraining a department.
Beyond tools the company sells ready-made blocks — interfaces, memory controllers, processor cores — that a customer embeds in its chip instead of designing them. That is a separate, fast-growing income source with licence royalties.
Demand grows structurally: chips get more complex, transistor counts rise, and designing them by hand is impossible. The model is subscription-based, so revenue is predictable. Risks are export controls on shipments to China and cyclicality in customer orders. The company pays no dividend.
Address:675 ALMANOR AVE, SUNNYVALE, CA, 94085, US
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| 379.64 |
| 381.43 |
| 2m |
| September 11, 2026 | 399.50 | 400.83 | 394.25 | 397.38 | 1m |
| September 10, 2026 | 396.30 | 401.47 | 390.51 | 397.17 | 2m |
| September 09, 2026 | 391.36 | 398.41 | 387.60 | 393.22 | 1m |
| September 08, 2026 | 396.82 | 405.80 | 391.46 | 392.03 | 2m |
| September 04, 2026 | 418.12 | 418.12 | 380.33 | 393.84 | 3m |
| September 03, 2026 | 419.10 | 419.84 | 413.11 | 416.31 | 1m |
| September 02, 2026 | 413.78 | 418.73 | 410.52 | 415.97 | 1m |
| September 01, 2026 | 428.21 | 430.88 | 413.97 | 414.82 | 2m |
| August 31, 2026 | 437.95 | 445.86 | 434.45 | 439.59 | 2m |
| August 28, 2026 | 461.85 | 462.45 | 440.60 | 442.61 | 2m |
| August 27, 2026 | 419.66 | 464.98 | 415.31 | 464.89 | 4m |
| August 26, 2026 | 405.10 | 419.60 | 403.54 | 410.00 | 3m |
| August 25, 2026 | 396.34 | 410.93 | 395.25 | 408.79 | 3m |
| August 24, 2026 | 395.20 | 395.99 | 388.11 | 394.51 | 1m |
| August 21, 2026 | 400.67 | 401.98 | 394.78 | 397.87 | 1m |
| August 20, 2026 | 399.60 | 401.42 | 394.57 | 397.92 | 1m |