The monthly chart above of MRVL shows price, from November through August, attempting to push above a level the stock has struggled at since 2006 and it has once again failed to hold those key levels.
The weekly chart shows that failed breakout occurred with negative divergence, a feature that is also present in the SOX index of which it is a member. The Semi's as a sector are looking bearish in the short term at least and are a concern for the broader market also. See here for analysis on the sector.
https://steemit.com/trading/@technicaltrader/us-markets-semiconductor-breakdown-a-serious-concern
Zooming in to the daily, we can see price has broken down from a descending triangle, giving a price target at 15.30. MRVL may find short term support given it is sitting right on the November gap but the pattern remains in play unless price closes significantly inside the triangle pattern.