Neither myself or the audience gave Steve O'Hara of Optibiotix (OPTI) an easy ride at Monday's UK Investor event in the City. But he presented well and I note that the chairman has today announced the purchase of £150,000 of shares at 71p. Watch Steve closely and you will see why the chairman is buying and why the shares - which are our largest holding but one we have added to in the past couple of months - are so cheap.
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