21VIANET GROUP INC

Ticker: VNET CUSIP: 90138A103 Class: SPONSORED ADS A

OBERWEIS ASSET MANAGEMENT INC/'s Holding History (CIK: 0000937886)

Note: Option positions (PUT/CALL) are excluded.

Q1 2025
Shares 10,000 Value ($000) $82 Avg Close — Range —
Q1 2021
Shares 131,800 Value ($000) $4,257 Avg Close — Range —
Q4 2020
Shares 109,100 Value ($000) $3,785 Avg Close — Range —
Q3 2020
Shares 80,000 Value ($000) $1,853 Avg Close — Range —
Q2 2020
Shares 65,000 Value ($000) $1,551 Avg Close — Range —
Q1 2020
Shares 60,000 Value ($000) $832 Avg Close — Range —
Q4 2018
Shares 110,000 Value ($000) $950 Avg Close — Range —
Q2 2016
Shares 190,400 Value ($000) $1,944 Avg Close — Range —
Q1 2016
Shares 198,980 Value ($000) $3,974 Avg Close — Range —
Q4 2015
Shares 43,580 Value ($000) $921 Avg Close — Range —
Q3 2015
Shares 34,342 Value ($000) $628 Avg Close — Range —
Q2 2015
Shares 161,009 Value ($000) $3,304 Avg Close — Range —
Q1 2015
Shares 299,959 Value ($000) $5,297 Avg Close — Range —
Q4 2014
Shares 530,059 Value ($000) $8,200 Avg Close — Range —
Q3 2014
Shares 615,639 Value ($000) $11,082 Avg Close — Range —
Q2 2014
Shares 468,869 Value ($000) $14,052 Avg Close — Range —
Q1 2014
Shares 538,279 Value ($000) $15,449 Avg Close — Range —
Q4 2013
Shares 854,640 Value ($000) $20,101 Avg Close — Range —
Q3 2013
Shares 914,220 Value ($000) $15,075 Avg Close — Range —
Q2 2013
Shares 922,963 Value ($000) $10,457 Avg Close — Range —