My other half put in an order to sell OGC today acting on a stop loss. He entered it as a buy order instead and neither of us noticed, even though it showed up as a highlight on my screen as well. We only noticed when the share traded above our 'sell' price and part of our order was still sitting there. Having accidently increased our parcel we got lucky and got out for our originally anticipated stop loss plus a bit of extra brokerage.
This is not the first time we've hit buy instead of sell.
Lesson learned - don't chat while trading and check every order twice.