XHS is an equal-weight ETF where none of the fund’s 60 holdings command more than 2.28% of its weight, but its exposure to the hospital stocks that are soaring in the wake of the Obamacare ruling is robust.

For example, in this order, LifePoint, Community Health, HCA, Universal Health Services (NYSE: UHS) and Tenet combine for nearly 10 of XHS’s weight. Shares of Tenet are up almost 13% today while Universal Health Services is higher by 7.1% on volume that is nearly triple the daily average. [Hidden Gem is Another Obamacare ETF Winner]

To put Obamacare’s impact on XHS into context, the ETF had about $62 million in assets under management at the end of 2013. It now has $188.2 million.

SPDR S&P Health Care Services ETF