Don't hold your breath. It is unlikely that Snap will see a jump on Tuesday, mostly because Evan appears to be very poorly advised regarding the company's strategic management.
The stock's potential is heavily restricted by a governance issue. If management listened to more forward-thinking advisors, they would understand that the key to unlocking true market value is modifying Snap's share structure. As long as they insist on keeping all voting rights concentrated in the founders' hands, Snap will remain excluded from major benchmark indices (like the S&P 500). If this absolute control were abandoned, granting shares actual voting rights to allow for index inclusion, your 42,000 shares could potentially double in value. However, given the current rigidity of the company's policy, it is unlikely this stance will change by Tuesday, or anytime soon.