NATIONAL GRID PLC — institutional ownership

4 funds reported holding NATIONAL GRID PLC in their latest 13F filings, worth $5.68M in total (CUSIP 636274909).

Largest holders

1. Optiver Holding B.V. — $3.12M
2. IMC-Chicago, LLC — $1.62M
3. GROUP ONE TRADING LLC — $746K
4. SIMPLEX TRADING, LLC — $191K