Analysts won't take cash-on-hand into account as far as projecting future EPS, etc., because it doesn't matter.
The only reason they would care about cash on hand is if (1) there was question about them having sufficient cash to fund operations, or (2) they ARE looking at a buyout, and what that cash is worth in a buyout (basically just dollar for dollar). In larger amounts, cash would be useful if they are looking to make an acquisition, but that's not in the cards for Amarin.
I think most people on here place too much value on Amarin's Cash and Inventory and lack of debt. Yes, it's helpful because it means they aren't going to go bankrupt, and gives them some operational flexibility. But it's not really helpful in terms of profitability in a pure sense. Yes, lack of debt saves on interest expense and cashflow. But again, it does not help with profit margins, per se. Which is the only thing analysts seem to really care about with Amarin right now.
Here's the other dynamic at play...Amarin is a penny stock. There's very little analyst coverage of Amarin these days. And the analysts that ARE covering Amarin now (versus 5 years ago) are mostly young, inexperienced analysts. I have noticed over the past few years that most of the analysts asking questions now are younger and less experienced (and you can tell by their questions). They aren't looking at buyouts. Their just analyzing Amarin's financial results and plugging them into their models.
Until something meaningful starts happening with Amarin (operationally), there isn't going to be all that much interest in Amarin from an analyst perspective.