That is because all the volume is tied up in the derivatives.
Symbol Last Chg Bid Ask Volume Open Int Strike Symbol Last Chg Bid Ask Volume Open Int Oct 05 Calls (28 days to expiration) QQQQ @ 38.67 Oct 05 Puts
QQJI 3.80 +0.10 3.70 3.90 7 2,824 trade 35.00 QQQVI 0.05 0 0.05 0.10 2 17,965 trade
QQQJJ 2.90 +0.10 2.80 2.90 897 16,318 trade 36.00 QQQVJ 0.10 0 0.05 0.10 142 27,127 trade
QQQJK 1.85 0 1.90 1.95 583 20,381 trade 37.00 QQQVK 0.20 +0.05 0.15 0.20 386 78,054 trade
QQQJL 1.10 +0.05 1.05 1.10 2,722 46,937 trade 38.00 QQQVL 0.35 -0.05 0.30 0.35 10,993 330,493 trade
QQQJM 0.50 +0.05 0.45 0.50 5,740 114,206 trade 39.00 QQQVM 0.75 -0.05 0.70 0.75 12,149 519,166 trade
QQQJN 0.20 +0.05 0.15 0.20 3,173 155,828 trade 40.00 QQQVN 1.45 +0.05 1.40 1.45 5,118 302,326 trade
QQQJO 0.05 0 0 0.05 1 69,158 trade 41.00 QQQVO 2.35 -0.05 2.30 2.35 428 27,658 trade
QQQJP 0.05 0 0 0.05 0 11,914 trade 42.00 QQQVP 3.31 -0.09 3.30 3.40 12 2,211 trade