Anaheim also received goalie Calle Clang, an unsigned draft pick.
Rakell is in the final year of a six-year contract he signed with the Ducks on Oct. 14, 2016, and can become an unrestricted free agent after the season. Anaheim will retain 35 percent of his salary.
RELATED: [NHL Trade Tracker]
"Thank you to all of the Anaheim Ducks fan base," Rakell said in an Instagram post. "The support has been unbelievable and it's been an honor to play in front of you at Honda Center. But now it's time to move on for another adventure."
The 28-year-old forward scored 28 points (16 goals, 12 assists) in 51 games this season. He finished in the top three in scoring for the Ducks each of the past four seasons.
"We like his skill set," Penguins general manager Ron Hextall said. "He plays with speed. He plays a fast game. So we feel like he's going to fit in real good here. Again, it's hard to score in this league, so when you add a player of Rickard's resume, put him with our players, we feel like we're a better team."
Selected by Anaheim in the first round (No. 30) of the 2011 NHL Draft, Rakell has scored 339 points (154 goals, 185 assists) in 550 regular-season games and 19 points (11 goals, eight assists) in 46 Stanley Cup Playoff games.
"As far as what he will bring, I think he's a guy that can help us on both sides of the puck," Penguins coach Mike Sullivan said Tuesday. "He can, first and foremost, play the type of game that we're trying to play. I think he brings a lot of speed to his game. He has the ability to finish. He's a good goal-scorer. He has good offensive instincts, but he also has awareness away from the puck, which is an important aspect of winning. So we think he can help us in a lot of capacities. But most importantly, we think he's a real good fit as far as the style of play that we're trying to play and some of the needs that we felt our team needed in order to become a better team."
Pittsburgh (38-16-9) was tied with the New York Rangers for second in the Metropolitan Division, three points behind the Carolina Hurricanes.
"We really like this team," Hextall said. "There's a few teams, obviously, that have a chance to do something special. We feel like our chances are better now than they were yesterday."
RELATED: [2021-22 NHL Trade Tracker]
Rakell made his Penguins debut against the Columbus Blue Jackets on Tuesday.
Aston-Reese scored 11 points (two goals, nine assists) in 52 games this season. The 27-year-old signed a one-year contract with the Penguins on Aug. 5, 2021, and can become an unrestricted free agent after the season.
Signed by Pittsburgh as an undrafted free agent on March 14, 2017, Aston-Reese has scored 62 points (29 goals, 33 assists) in 213 regular-season games and four points (one goal, three assists) in 23 playoff games.
"Zach Aston-Reese has been a terrific Penguin, and we thank him for everything he's done for the organization," Hextall said. "Dom Simon as well."
Simon scored nine points (three goals, six assists) in 55 games this season. The 27-year-old signed a one-year contract with the Penguins on July 28, 2021 and can become an unrestricted free agent after the season.
Selected by the Pittsburgh Penguins in the fifth round (No. 137) of the 2015 NHL Draft, Simon has scored 73 points (22 goals, 51 assists) in 239 regular-season games with the Penguins and Calgary Flames and four assists in 12 playoff games.
Clang has not played in the NHL. The 19-year-old was selected in the third round (No. 77) of the 2020 NHL Draft and played for Rogle BK of the Swedish Hockey League, the top professional league in Sweden this season.
Anaheim (27-27-11) was seven points behind the Vegas Golden Knights for the second wild card into the Stanley Cup Playoffs from the Western Conference.
The Ducks traded defenseman
Hampus Lindholm
to the Boston Bruins and forward Nicolas Deslauriers to the Minnesota Wild on Saturday.
"My goal at the end of it was to try and get some young players along with draft picks, picks that were kind of more advanced in their development," said Ducks general manager Pat Verbeek, who was hired Feb. 3. "And I'm very happy with how it turned out with getting those young players and now accumulating some draft picks."
NHL.com independent correspondents Wes Crosby and Dan Arritt contributed to this report
