I've commented previously on the curious SLV stock movements over the last couple of weeks (weeks starting 9-22 and 9-29) whereby SLV added big to start the week and then shed (or get raided) the rest of the week (see link in

comment below).
Yesterday, SLV broke the pattern as the stock report informed of a loss of 3.3M ozt to start the week. This occurred while SLV shares to borrow hit zero and the borrow fee blew out to almost 10%. This prompted me to speculate that perhaps SLV will have trouble creating new shares if the LBMA doesn't have available silver to back them.
But then I see a report that SLV actually reported adding ~5M shares yesterday (while losing 3.3M ozt of stock). That got me curious as I have not been tracking the SLV share issuance closely, so I looked back at the share issuance since 9-22 and compared it to the vault stock movements.
When SLV added 8.8M ozt to the vault stock on 9-22, they also added ~9M shares on 9-22 and 9-23. As the vault stock shed ~3.5M ozt on 9-25 and 9-26, SLV also shed ~4M shares. It looks like shares and vault stock tracked each other closely.
When SLV added ~10M ozt to the vault stock on 9-29 and 9-30, they also added ~12M shares. As the vault stock shed ~8.5M ozt 10-1 through 10-3, SLV also shed ~18M shares. It looks like the late week share dissolution way overshot the vault stock drain.
Yesterday, SLV shed 3.3M ozt, but added 5M shares! This is an anomaly and I have to wonder if it is just a correction - bringing the share/stock ration back to balance from late last week's apparent overshoot, or if SLV needs to find silver to back the new shares.