BIO RAD LABS INC

Ticker: BIO CUSIP: 090572207 Class: COM

Yorktown Management & Research Co Inc's Holding History (CIK: 0001313559)

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

Q1 2014

Shares 2,500 Value ($000) $320 Avg Close $128.18 Range $120.43 - $134.13

Q4 2013

Shares 2,500 Value ($000) $309 Avg Close $121.86 Range $115.25 - $125.00

Q3 2013

Shares 2,500 Value ($000) $294 Avg Close $117.94 Range $111.49 - $126.98

Q2 2013

Shares 2,500 Value ($000) $281 Avg Close $117.30 Range $110.02 - $127.17

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	2,500	$320	$128.18	$120.43 - $134.13
Q4 2013	2,500	$309	$121.86	$115.25 - $125.00
Q3 2013	2,500	$294	$117.94	$111.49 - $126.98
Q2 2013	2,500	$281	$117.30	$110.02 - $127.17