TSX rises 0.44% to 20,029.19

* The Toronto Stock Exchange's TSX rises 0.44 percent to 20,029.19

* Leading the index were Denison Mines Corp , up 6.5%, Ero Copper Corp​, up 4.8%, and Nexgen Energy Ltd​, higher by 4.7%.

* Lagging shares were BlackBerry Ltd​​, down 12.4%, OrganiGram Holdings Inc​, down 5.6%, and Aurora Cannabis Inc​, lower by 5.1%.

* On the TSX 156 issues rose and 69 fell as a 2.3-to-1 ratio favored advancers. There were 17 new highs and no new lows, with total volume of 191.1 million shares.

* The most heavily traded shares by volume were Blackberry Ltd, Great-west Lifeco Inc and Suncor Energy Inc.

* The TSX's energy group rose 1.92 points, or 1.4%, while the financials sector slipped 0.16 points, or 0.0%.

* West Texas Intermediate crude futures rose 0.81%, or $0.56, to $69.37 a barrel. Brent crude rose 0.42%, or $0.3, to $71.61 [O/R]

* The TSX is up 14.9% for the year.

This summary was machine generated June 4 at 21:03 GMT.