Universal Health Services Inc. shares dropped in the extended session Wednesday after the hospital operator's earnings fell short of Wall Street estimates. Universal Health Services shares fell 5.8% after hours, following a 1.3% rise to close at $122.04 in the regular session. The company reported first-quarter net income of $223.8 million, or $2.36 a share, compared with $206.1 million, or $2.12 a share, in the year-ago period. Adjusted earnings were $2.45 a share. Revenue rose to $2.69 billion from $2.61 billion in the year-ago period. Analysts surveyed by FactSet had estimated $2.59 a share on revenue of $2.98 billion.