You do realize that the GWPH IPO price was created to reflect a 1/12X ratio of shares between the two tickers, right? Look at the trading history and GWP.L (on the London exchange). Do the conversion from pence to pennies (dollars). It will be close to GWPRF. Multiply that number by 12. It will be close to GWPH. In other words, it cannot "catch up", ever. I have held GWPRF for a long time and bought GWPH on the dip below the IPO price (added to both since). Good luck.