Canadian Stock Market Movers on Monday

With U.S. markets closed for July 4th, silver prices surged over $21, driven by speculation of more central bank stimulus amid Brexit uncertainties. Silver has outperformed gold, rising 48% this year. Nova Scotia's Emra increased its annual dividend by 10% and extended its growth target to 2020, boosting its shares by over 10% this year. Gran Tierra Energy's shares fell after agreeing to acquire Petro Latina for $525 million, with assets primarily in Colombia. Analyst David Fung suggests a cautious approach for investors.

What company did Gran Tierra energy agree to buy, and for how much?

What is the suggested approach for investors regarding Gran Tierra according to Credit Suisse analyst David Fung?