27 Increased Institutional Holders
1,874,237 Increased Total Shares Held
15 Decreased Institutional Holders
666,918 Decreased Total Shares Held
If you do the math it's about a 1.2 million share increase of shares held by institutions and not retail share holders. Increased calculations include New position. and Decreased includes sold out positions.
FYI - careful with that number, because if a retail investor does not hold physical possession of their shares they could be listed under the brokerage (and therefore be captured under institutional ownership). not saying your calculation is incorrect, just advising you that it does not necessarily mean what you are interpreting.