OSIS
$194.86+0.46%
OSI Systems Inc. Common Stock (DE)Stock · TechnologyRussell 2000 · 0.1% of IWMNasdaq Composite · 0.01% of ONEQRussell 3000 · 0.005% of IWVUS Stock Market · 0.005% of VTI
OSI Systems Inc. Common Stock (DE) monthly returns
OSI Systems Inc. Common Stock (DE) has averaged 1.87% per month, positive in 56% of months. Month-by-month returns for OSI Systems Inc. Common Stock (DE) (OSIS) below, through October 20, 2026 — the table lists the most recent months; the bar chart plots the last 5 years.
Average month
+1.9%
346 months
Best month
+98.5%
Oct 2001
Worst month
-51.1%
Oct 2008
Positive months
56%
of all months
OSI Systems Inc. Common Stock (DE) monthly returns#
| Month | Path | Total return |
|---|---|---|
| Oct 2026 | +0.3% | |
| Sep 2026 | -6.5% | |
| Aug 2026 | -6.1% | |
| Jul 2026 | +1.2% | |
| Jun 2026 | +0.9% | |
| May 2026 | -24.5% | |
| Apr 2026 | +8.1% | |
| Mar 2026 | -6.9% | |
| Feb 2026 | +14.0% | |
| Jan 2026 | -1.9% | |
| Dec 2025 | -5.8% | |
| Nov 2025 | -2.7% | |
| Oct 2025 | +11.7% | |
| Sep 2025 | +8.3% | |
| Aug 2025 | +4.1% | |
| Jul 2025 | -1.7% | |
| Jun 2025 | +2.6% | |
| May 2025 | +7.0% | |
| Apr 2025 | +5.4% | |
| Mar 2025 | -5.8% | |
| Feb 2025 | +5.0% | |
| Jan 2025 | +17.3% | |
| Dec 2024 | -5.6% | |
| Nov 2024 | +34.2% | |
| Oct 2024 | -12.9% | |
| Sep 2024 | +1.3% | |
| Aug 2024 | +1.3% | |
| Jul 2024 | +7.6% | |
| Jun 2024 | -4.3% | |
| May 2024 | +9.4% | |
| Apr 2024 | -8.0% | |
| Mar 2024 | +8.9% | |
| Feb 2024 | +2.5% | |
| Jan 2024 | -0.8% | |
| Dec 2023 | +4.7% | |
| Nov 2023 | +18.2% | |
| Oct 2023 | -11.7% | |
| Sep 2023 | -13.4% | |
| Aug 2023 | +14.4% | |
| Jul 2023 | +1.2% | |
| Jun 2023 | -1.0% | |
| May 2023 | +5.4% | |
| Apr 2023 | +10.4% | |
| Mar 2023 | +10.6% | |
| Feb 2023 | -2.3% | |
| Jan 2023 | +19.1% | |
| Dec 2022 | -10.1% | |
| Nov 2022 | +7.7% | |
| Oct 2022 | +14.0% | |
| Sep 2022 | -13.5% | |
| Aug 2022 | -13.8% | |
| Jul 2022 | +13.1% | |
| Jun 2022 | +1.8% | |
| May 2022 | +6.1% | |
| Apr 2022 | -7.1% | |
| Mar 2022 | +5.5% | |
| Feb 2022 | -2.7% | |
| Jan 2022 | -11.0% | |
| Dec 2021 | +2.5% | |
| Nov 2021 | -2.3% | |
| Oct 2021 | -1.8% | |
| Sep 2021 | -4.2% | |
| Aug 2021 | -1.1% | |
| Jul 2021 | -1.6% | |
| Jun 2021 | +5.5% | |
| May 2021 | -0.2% | |
| Apr 2021 | +0.5% | |
| Mar 2021 | +1.6% | |
| Feb 2021 | +5.1% | |
| Jan 2021 | -3.4% | |
| Dec 2020 | +5.8% | |
| Nov 2020 | +14.2% | |
| Oct 2020 | -0.6% | |
| Sep 2020 | -1.4% | |
| Aug 2020 | +11.0% | |
| Jul 2020 | -4.9% | |
| Jun 2020 | -1.5% | |
| May 2020 | +4.7% | |
| Apr 2020 | +5.0% | |
| Mar 2020 | -15.2% | |
| Feb 2020 | -6.1% | |
| Jan 2020 | -14.1% | |
| Dec 2019 | +1.3% | |
| Nov 2019 | +0.3% | |
| Oct 2019 | -2.3% | |
| Sep 2019 | -3.3% | |
| Aug 2019 | -6.7% | |
| Jul 2019 | -0.1% | |
| Jun 2019 | +8.7% | |
| May 2019 | +14.9% | |
| Apr 2019 | +2.9% | |
| Mar 2019 | +0.9% | |
| Feb 2019 | -3.2% | |
| Jan 2019 | +22.4% | |
| Dec 2018 | +1.2% | |
| Nov 2018 | +4.7% | |
| Oct 2018 | -9.4% | |
| Sep 2018 | -2.0% | |
| Aug 2018 | -2.3% | |
| Jul 2018 | +3.1% | |
| Jun 2018 | +12.8% | |
| May 2018 | +7.1% | |
| Apr 2018 | -1.9% | |
| Mar 2018 | +3.4% | |
| Feb 2018 | -4.4% | |
| Jan 2018 | +2.6% | |
| Dec 2017 | -25.7% | |
| Nov 2017 | -1.9% | |
| Oct 2017 | -3.3% | |
| Sep 2017 | +10.0% | |
| Aug 2017 | +3.9% | |
| Jul 2017 | +6.4% | |
| Jun 2017 | -5.1% | |
| May 2017 | +2.3% | |
| Apr 2017 | +6.0% | |
| Mar 2017 | -3.2% | |
| Feb 2017 | +1.0% | |
| Jan 2017 | -1.9% | |
| Dec 2016 | +0.6% | |
| Nov 2016 | +7.9% |
Monthly total return (since Nov 2021)#
-30%-20%-10%0%10%20%30%
Nov 2021-2.3%
Dec 2021+2.5%
Jan 2022-11%2022
Feb 2022-2.7%
Mar 2022+5.5%
Apr 2022-7.1%
May 2022+6.1%
Jun 2022+1.8%
Jul 2022+13%
Aug 2022-14%
Sep 2022-14%
Oct 2022+14%
Nov 2022+7.7%
Dec 2022-10%
Jan 2023+19%2023
Feb 2023-2.3%
Mar 2023+11%
Apr 2023+10%
May 2023+5.4%
Jun 2023-0.99%
Jul 2023+1.2%
Aug 2023+14%
Sep 2023-13%
Oct 2023-12%
Nov 2023+18%
Dec 2023+4.7%
Jan 2024-0.79%2024
Feb 2024+2.5%
Mar 2024+8.9%
Apr 2024-8.0%
May 2024+9.4%
Jun 2024-4.3%
Jul 2024+7.6%
Aug 2024+1.3%
Sep 2024+1.3%
Oct 2024-13%
Nov 2024+34%
Dec 2024-5.6%
Jan 2025+17%2025
Feb 2025+5.0%
Mar 2025-5.8%
Apr 2025+5.4%
May 2025+7.0%
Jun 2025+2.6%
Jul 2025-1.7%
Aug 2025+4.1%
Sep 2025+8.3%
Oct 2025+12%
Nov 2025-2.7%
Dec 2025-5.8%
Jan 2026-1.9%2026
Feb 2026+14%
Mar 2026-6.9%
Apr 2026+8.1%
May 2026-24%
Jun 2026+0.9%
Jul 2026+1.2%
Aug 2026-6.1%
Sep 2026-6.5%
Oct 2026+0.25%
OSI Systems Inc. Common Stock (DE) returns by calendar month#
Every month of every year since 1998, one tick per year on a shared scale; the dark bar is the month's average. Total returns, dividends reinvested.
October 2026 so far: +0.25% — 15th of 29 Octobers since 1998 at the last close; the average October returned +2.9%.
| Month | −100%0+100% | Average | Median | Up | Best | Worst |
|---|---|---|---|---|---|---|
| Jan | +5.6% | +4.5% | 55% | +77.3% 2000 | -38.2% 2016 | |
| Feb | +0.7% | +1.7% | 55% | +44.2% 2000 | -29.7% 1999 | |
| Mar | -1.0% | +1.8% | 59% | +20.0% 2002 | -28.4% 1999 | |
| Apr | -1.6% | -1.1% | 45% | +33.3% 2001 | -36.9% 2000 | |
| May | +0.9% | +3.1% | 72% | +14.9% 2019 | -35.6% 2000 | |
| Jun | +2.3% | +1.4% | 55% | +32.8% 2000 | -15.0% 2008 | |
| Jul | -0.7% | -0.1% | 45% | +13.1% 2022 | -24.3% 2002 | |
| Aug | +4.5% | +3.3% | 59% | +79.2% 2000 | -21.8% 2004 | |
| Sep | +1.2% | -1.6% | 41% | +86.1% 2001 | -21.9% 2000 | |
| Oct | +2.9% | +0.6% | 50% | +98.5% 2001 | -51.1% 2008 | |
| Nov | +6.1% | +6.5% | 68% | +34.2% 2024 | -35.4% 2000 | |
| Dec | +1.8% | +1.6% | 64% | +33.5% 2009 | -30.8% 2013 |
Methodology#
Monthly returns are total returns (dividends reinvested), computed from OSIS's split- and dividend-adjusted month-end closes. The table shows the most recent 120 months and the bar chart the most recent 60. See the year-by-year returns for the annual view. Past performance does not predict future returns; not investment advice.
FAQ#
- What is OSI Systems Inc. Common Stock (DE)'s average monthly return?
- OSI Systems Inc. Common Stock (DE) (OSIS) has averaged about 1.87% per month, positive in roughly 56% of months. The best month was Oct 2001 (+98.5%) and the worst was Oct 2008 (-51.1%).
More on OSI Systems Inc. Common Stock (DE)
By month for: S&P 500 · S&P 500 Equal Weight · US Stock Market · Nasdaq-100