Not a Global Lock or chill.
The stock, although having the NSCC exit their position is not good, its not the same scenario as a lock. It's been designated as a trade for trade.
Trade-for-Trade Settlement requires that the brokerage firm delivers or receives traded securities directly to or from the firm with which the trade was executed.
For example – Firm A buys 200 shares of SLRW from Firm B. On settlement date, Firm B delivers 200 shares of SLRW to Firm A. In turn, Firm A renders payment to Firm B for the delivered securities.
Securities transactions are subject to Trade-for-Trade settlement under the following conditions:
1. The trade is compared Ex-Clearing
2. The security traded is a fixed income security and one - or both - of the trading firms is not a CNS clearing firm ie, Solarbrook.
The next step is find out why the NSCC exited their position. Until that is known, we know nothing.
