While viewing a chart, you are actually looking at two different prices: a historical price and a current price.
When you first open a chart, Alveo doesn’t have a history of current prices so it must backfill the chart with data from our “Historic Data” server; this is called historical data.
Once a chart is open, Alveo starts receiving “Current Price” data from our “Quote Server.” Apiary Fund has multiple liquidity providers who send their current price quote to our Quote Server which collects and organizes the different quotes, finds the best price, and broadcasts it to your computer.
The challenge with current price data is that occasionally we get an incorrect quote from one of our liquidity providers – called a misquote. Since Alveo doesn’t know whether a quote is correct or not, it will “print” that quote on the chart.
As you can imagine, misquotes are problematic for many reasons. First, misquotes are not a true reflection of price and any analysis using a misquote will be inaccurate. Second, the misquote may trigger pending orders. If the price limit of the pending order is between the current quote and the misquote, then it will trigger the pending order and give you a fill that is outside the current price.
No data or quote providers guarantee perfect data. However, Alveo takes extra steps to make sure it has an impeccable record of clean data. We have sophisticated systems in place to catch misquotes sent to us by our liquidity partners. These systems catch the vast majority of misquotes, but again, no data is perfect and occasionally a misquote will slip past our watchful eyes – about one in about 100,000 misquotes to be precise.
Most of these misquotes are so close to the current price that you’ll never notice, but occasionally a misquote may pop up that is more apparent. If you suspect there is a misquote on your chart, you can find out by refreshing your data. This will cause Alveo to pull historical price data. If the spike on your chart goes away, then you’ll know it was a misquote. If the spike on your chart remains, then you’ll know it was a good quote.