Where did I invest on Friday 12/14?

Markets were down from the beginning of the day. I wanted to buy more of  some stocks like TWILIO, OKTA or COUP. Instead I bough 10 stocks of IRIDIUM at 21, which later was down by another almost 4 %

Also by the end of the day Costco fell by a great margin, I bought it at 207.70 and final price for the day was 207.06. I guess, it should increase by a factor of 5 % within next 3 days of business. Also purchased 1 Coup at 64.46 and 2 TWILIO at 92. 

I started with 500 $ in September added another 450 in October. Current value is 960 and highest was 991 during first week of December. If I cross 1000 this week, I plan to sell all including Roku, which is showing  123 $ loss and square showing ~ $10.

Investing via Merrill Edge

Markets have been down since last almost three 3 months. I use Stash and Robinhood for daily investing exercises while Fidelity for mutual funds. Also use Betterment for monthly savings. While I was almost 8 % up in Stash in early October, as of now I’m almost 10 % down on that platform. I have put a little over than 6K in that account.

I started using Merrill Edge when I was persuaded by a BofA agent back in September, I started with 500 and soon added another 450 and that was the time when it crashed. Most of the value in Roku and Square got vanished. The I found some new stocks like Twilio, MDB and Okta which helped.