LONDON -- Stock markets are seeing a third day of gains, although they're somewhat more subdued than the previous two sessions, given weaker-than-expected U.S. factory output data last night. It is perhaps testament to this rally that benchmark indexes in Europe are still managing to squeeze out these gains, making this the largest three-day rally of the year so far, although premarket trade shows the S&P 500 (INDEX: ^GSPC) is not following suit, so far expected to open flat on the day.

As always, several companies are managing to put in a much more impressive performance, so here are three ADRs that are set to beat the S&P today.

Rio Tinto
Rio Tinto
(NYSE: RIO) is making solid gains in London this morning, up more than 2.6% after it announced last night that it has agreed, in principle, to a labor pact with workers at their Alma aluminum smelter in Quebec. If accepted, it should allow the company to restart the smelter and bring it back to full capacity.

Rio's gains come as the Royal Bank of Australia kept interests rates at 3.5% overnight -- a move widely expected and in spite of weaker commodity market performances today, including low iron ore prices stemming from concern over Chinese demand.

Barclays
It is perhaps no surprise to find Barclays (NYSE: BCS) once again coming to the fore Tuesday, up around 2% after CEO Bob Diamond announced he is bowing to public pressure after the LIBOR scandal and resigning from his position. The news initially had Barclays shares making somewhat tentative moves to the downside, but sentiment soon shifted to see this as a positive step for the bank, although the price is seeing a fair amount of volatility.

The bank said Diamond will be stepping down immediately from his position, and U.K. Chancellor George Osborne came out almost immediately hailing the move as "the right decision."

Veolia Environnement
The French utility provider Veolia Environnement (NYSE: VE) is making good headway in Paris today, also up around 2% as further information emerges regarding the sale of its U.K. water business, announced last week. The Morgan Stanley-backed group buying the business is said to be getting more than 900 million pounds in loans to fund the deal. This comes on the back of a report by Bank of America last week suggesting that this sale by Veolia, aimed at reducing its debt burden, may be the first of many similar moves, including the potential disposal of its U.S. waste unit.

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Karl does not own any share mentioned in this article. Motley Fool newsletter services have recommended buying shares of Veolia Environnement. The Motley Fool has a disclosure policy. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. Try any of our Foolish newsletter services free for 30 days.