Quote from TL Trader:
The MNX index has a price based on 1/10 the value of the NDX index, so, for example, if the NDX index is at 1400, the MNX will be 140.
Nasdaq-100 Index Tracking Stock QQQQ
The initial market value of QQQQ generally approximates 1/40 the value of the underlying Nasdaq-100 Index. So for example, if the NDX price level is 1400, the QQQQs generally would be expected to be priced around $35.