Netflix, Inc. (NASDAQ: NFLX) shares spiked Thursday after market. The popular video streaming company provided their first quarter financial results for the fiscal year of 2018. Netflix reported revenue growth of 43% year over year in Q1, the fastest pace in the history of the company, due to a 25% increase in average paid streaming memberships and a 14% rise in ASP. Operating margin of 12% rose 232 bps year over year. This was higher than our beginning of quarter guidance, due primarily to the timing of content spend. Diluted EPS of $0.64 vs. $0.40 included a $41m non-cash unrealized loss from F/X remeasurement on our Eurobond.
Global net adds totaled a new Q1-record of 7.41m, up 50% year over year and ahead of our 6.35m forecast. The variance relative to our guidance was driven by continued strong acquisition trends across the globe which we attribute to the growing breadth of our content and the worldwide adoption of internet entertainment.
In the US, we added 1.96m memberships (compared with forecast of 1.45m). We completed our price adjustment during this past quarter, resulting in 12% ASP growth for the domestic segment. Outside of the US, membership grew by 5.46m (vs. forecast of 4.90m). Our international segment now accounts for 50% of revenue and 55% of memberships. Excluding a F/X impact of +$114 million, international revenue and ASP rose 59% and 13% year over year, respectively.