Invalid Ticker Symbol - Yahoo! Finance

Changed Ticker Symbol

'OPRX.PK' is no longer valid. It has changed to OPRX.OB.

	Try other tools for finding stocks:
	•	Company Index
	•	Stock Screener
	•	Stocks by Industry
	•	Most Active Stocks

Quotes delayed, except where indicated otherwise.
Delay times are 15 mins for NASDAQ, 20 mins for NYSE and Amex. See also delay times for other exchanges.

Fundamental company data provided by Capital IQ. Quotes and other information supplied by independent providers identified on the Yahoo! Finance partner page. Quotes are updated automatically, but will be turned off after 25 minutes of inactivity. Quotes are delayed at least 15 minutes. Real-Time continuous streaming quotes are available through our premium service. You may turn streaming quotes on or off. All information provided "as is" for informational purposes only, not intended for trading purposes or advice. Neither Yahoo! nor any of independent providers is liable for any informational errors, incompleteness, or delays, or for any actions taken in reliance on information contained herein. By accessing the Yahoo! site, you agree not to redistribute the information found therein.