The act of pumping up a stock the final day of the quarter (or year) to 'boost performance' - isn't this falling into the are of market manipulation (and potential fraud or at least misleading advertising against fund investors)? People have been prosecuted in the futures markets for jamming the close before expiry, so why do stock fund managers get a free pass? Either make all 'market manipulation' legal, or enforce the laws in all cases - the current selective enforcement makes no sense at all.