NSE Investments will sell up to 20.31% stake in Protean eGov Technologies via an OFS. The floor price is set at Rs 1,550. The OFS will open for non-retail investors on Friday and for retail investors on Monday. NSE Investments is a wholly-owned subsidiary of NSE. NSE Investments will sell up to 20.31% stake in Protean eGov Technologies via an OFS. The floor price is set at Rs 1,550. The OFS will open for non-retail investors on Friday and for retail investors on Monday. NSE Investments is a wholly-owned subsidiary of NSE. Economic Times