Your port is worth 4+bill and you are kinda asking about having free cash and not knowing where to invest it. DROI is really only helpful when you have limited funds. You have outgrown DROI.
Step 1: Look at the starbonds adjusting next week and estimate what they might adjust to and invest in anything that looks like it is likely to make you a nice profit.
Some starbonds are already ARB and will be adjusting up a few points from already reported box office with more box office coming (and a bigger adjust). These are great investments
Some limited movies have already stopped reporting box office and you can already know the exact amount the starbond will adjust to. These starbonds almost have no risk.
Step 2: If you looked at next weeks starbond adjusts and have already invested in everything you think is of value then you move on and check out the starbonds adjusting for the week after that.
Step3: After investing in all the starbond adjusts worth investing in that week then you start looking at the starbonds adjusting the week after that... then the week after that... then the week after that....
You keep doing this until you run out of money or you run out of movie release dates. It is like laying down railroad track. You make money from this weeks starbond adjust and you use that money to invest in starbonds in the future (whereever you ran out of money)
Then you keep an eagle eye on the movie board for release date changes, release date announcements, IPOs and starbond attachment notices.
Release date changes *could* change the order of adjusts for all the starbonds attached so you just have to double check the attached bonds to see if you need to change your starbond holdings.
IPOs sometimes come with attached cast and with release dates and you just have to double check each week when the calendar is released for the next week to see is any of your starbond investments need to be updated.
You also check each Monday after box office actuals have been reported (when HSX posts *Official Cashouts*) to see which limiteds did or didnt report box office and check to see if that affects any starbonds that you are invested in.
Raising starbonds is like raising a garden. You only have to do the time consuming work one time. The rest is easy and is just watering each day and pulling the random weed from time to time and picking the fruit when it is ready.
(NOTE: If you get lazy and slack off then it is possible for the weeds to overtake your garden and you will have to do the hard work all over again. See above and start again at step #1)
Just a sample of gardening I did today:
Mila Kunis, Christina Applegate, Kristen Bell to Star in Mom Comedy aka Bad Moms
MKUNI has a movie in release - no change
KBELL... wont be her next adjust - no change
CAPPL... looks like her next adjust - need to estimate box office and double check how I am invested
Kimberly Elise has joined the cast of A Meyers Christmas
KELIS was dead delisted last year - no change
Common to Play Villain in John Wick 2
COMMN has other movies that will be released before Wick 2 - no change
Ian McShane reprising role from first movie
IMCSH has a movie being released before Wick 2 - no change
Common to play villain in John Wick 2
Somebody posted this again - still no change
Sofia Boutella is nearing a deal to join The Coldest City
She does not have a starbond - no change
There were no weeds in my starbond garden today. Everything has been watered.