Visible crew/equipment: When Natalie is talking to Bud on the phone her assistant opens the doors to Gekko's office and 3 guests follow in single file. As the camera follows them in, their shadows are displayed on the right hand door. There is another shadow moving behind the last guest, which is someone in the film crew. (00:08:50)
Continuity mistake: The car Carl Fox is driving is on a 3 lane road with concrete barriers, that does not allow for parking. When the camera angle changes to show the interior, the car is on a road with vehicles parked on the sides. (01:53:20)
Continuity mistake: When Bud says "I never knew how poor I was until I started making a little money" Gekko moves his right hand to drop ash from his cigarette into the glass ash tray. When the camera angle changes to show Gekko smile, his right hand is stationary on his leg. (00:54:00)
Continuity mistake: During Bud's document signing scene there are a few glasses between Gordon Gekko and Mr Salt which are less than half full. When Kate asks Rudy to be taken for a nap the camera shows her for a few seconds, and when the camera returns to the table the levels are significantly higher, with not enough time to be refilled by the waiter. (00:56:00)
Continuity mistake: When Bud is asked about the cute analyst, Marv puts his left arm on a computer monitor, but when the camera angle changes in the next frame Marv has his back turned to the computer. (00:20:00)
Continuity mistake: In the club changing rooms Gekko fiddles with the knot of his tie but does not neatly fold his shirt collar, which exposes the tie at the back. When he puts on his jacket the collar and tie now appear properly dressed. (00:28:00)
Continuity mistake: At Gekko's party Bud is introduced first to Sam Ruspoli, Carmen Winters, then Stone Livingston. After Bud shakes hands with Ruspoli he extends his hand to Winters who remains seated. When the camera angle changes Bud shakes with Livingston but the handshake with Winters has been cut from the footage. The changing camera angle reveals another error. The paperwork that Bud gives Gekko inside his front door is now folded in half but the action to fold the papers has also been cut. (00:39:00)
Factual error: Following the tavern scene with his father, Bud wakes up early and loads a calendar on his computer: Monday 6 May 1985. Later that day at Jackson Steinem and Co, Marvin says "Buddy, got tickets to the Knicks game tonight. Go out and cruise some chicks afterwards, this is gonna be awesome, whaddya say?" Inviting him to a New York Knicks NBA basketball game. However on that day the Knicks never played, and secondly the playoffs had begun - by finishing second-last in the Eastern Conference, New York were eliminated from making the playoffs. (00:19:40)
Continuity mistake: When Bud and Darien are arguing, and Bud is sitting, both venetian blinds behind the sofa are at angles, one left to right and the other right to left. He stands and when we next see the blinds they have both changed to opposite angles and stay that way. (01:42:00)
Continuity mistake: After his first encounter with Gekko, back at the office Marv invites Bud to a night out. During the conversation Bud's jacket is draped on the back of his chair, but in the shot where Marv returns to his computer, the jacket disappears. (00:21:50)
Continuity mistake: At the end, when Bud is walking the steps to court, the number of people next to him swaps dramatically between the close and aerial angle.
Continuity mistake: Buddy is having some drinks with Gekko, after he says "It's a piece of cake" the filming crew is reflected on his sunglasses.
Continuity mistake: When Gekko says that Ollie is the best trader on the street, Bud turns his head to his right, but when the camera angle changes in the next frame Bud's head is turned to his left. (00:16:00)
Visible crew/equipment: About halfway through the scene in which Bud Fox first visits his old college pal Roger, the attorney, there's a boom mike visible in the upper left-hand corner of the picture during a shot facing Roger. (00:53:05)
Answer: It's probably just a movie inaccuracy. For whatever reason, probably technical, economical, or for artistic considerations, the scene could have been staged and shot during sunset rather than sunrise. Oftentimes, scenes are not actually filmed when and where they are supposedly set. Locations are often substituted for ones that are more private, more scenic, have easier physical access, are in a less expensive economic region (such as Canada), and so on.
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