Saba Capital Management, Boaz Weinstein’s white-hot credit hedge fund, is holding a Wall Street merger hostage — again. 

Last month, Morgan Stanley announced it was buying for $7 billion money manager Eaton Vance, which oversees more than two dozen closed-end funds. 

Saba built positions in several Eaton Vance bond vehicles and launched proxy contests that threaten to disrupt the pairing — if the funds’ stewards don’t act to reduce or eliminate persistent discounts to the funds’ net asset values, or NAVs.

This may sound familiar. A similar Saba campaign earlier this year prepared to gum up Franklin Resource’s $4.5 billion purchase of Legg Mason by wading into the latter’s closed-end funds.