As it turns out (I had to do some digging to be certain), it is a default feature of WordPress to exclude password-protected posts from the search results. Thus, if you search for a ticker using the search tool at the top, you will not see, in the results, posts that are “active” and “protected.”
I believe there is a way to modify this feature, and I am in the process of comprehending the necessary code adjustments that may be necessary.
In the meantime, using the ticker list on the left sidebar will deliver to you a list of all posts for a given ticker, including password-protected ones.
I will let you know when I have this resolved.