Here are the key ASX small cap winners and losers at lunch Wednesday Aug 8:

The ASX Small Ords was down 4 points or 0.1 per cent to 2819.2 at 12.45pm AEST.

GOING UP

Oil explorer Carnarvon Petroleum (ASX:CVN) rocketed 43 per cent today to trade as high as 69.5c — quadrupling its value since July.

Carnarvon has its foot on what looks to be a commercially viable discovery in its part-owned Dorado well off the north-west coast of WA.

Today Carnarvon confirmed it had made new oil discoveries at the “Crespin” and “Milne” sites of the Dorado-1 well.

More than $30 million worth of shares changed hands by midday.

“Discovering more oil in the Crespin and Milne Members makes this a truly incredible find, for Dorado and for similar structures nearby that have been identified in Carnarvon and [joint venture partner] Quadrant’s prospect list,” said Carnarvon boss Adrian Cook.

Medtech play G Medical (ASX:GMV) took off after announcing plans to list its Chinese business in Hong Kong.

The shares price rose 48 per cent to an intraday high of 27.5c today before cooling to 25c just after midday. About $760,000 worth of stock was traded.

G Medical makes a medical phone case called Prizma that turns a smartphone into a clinical-grade mobile medical monitor to measure vital signs such as ECG, respiration, oxygen saturation, heart rate, temperature and stress analysis.

The company is proposing to list its Guangzhou Yimei Innovative Medical Science and Technology Co at a valuation of $260 million, within nine months.

It will retain 50 per cent of the company’s stock.

West Australian battery metal explorer Venture Minerals (ASX:VMS) moved ahead 30 per cent this morning after finding finding a 17m zone of massive sulfides in maiden drilling at its base metals Thor project in Western Australia.

It’s verified copper and zinc in the sulfides as well as lead, bismuth, tin, tungsten and arsenic.

Lab tests of samples are underway along with planning for an airborne electromagnetic survey.

The stock hit an intraday high of 3c before cooling to 2.8c at 12.20pm AEST.

Here are the best performing ASX small cap stocks at 12.30pm Wednesday, Aug 8:

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ASX code Company Today's price change (12.30pm) Price (12.30pm) Volume Market Cap
BDI BLINA MINERALS 1 0.002 17M 4.3M
PCH PROPERTY CONNECT 0.5 0.003 3M 2.4M
LKO LAKES OIL 0.5 0.003 323k 71.9M
AHN ATHENA RESOURCES 0.409090909091 0.031 161k 4.8M
GMV G MEDICAL 0.378378378378 0.255 2M 62.9M
WGL WANGLE TECH 0.333333333333 0.004 550k 6.2M
HDY HARDEY RESOURCES 0.25 0.005 2M 5.4M
VMS VENTURE MINERALS 0.217391304348 0.028 1M 11.9M
LI3 LITHIUM CONSOLID 0.217391304348 0.14 56k 10.4M
NOR NORWOOD SYSTEMS 0.2 0.006 80k 6.6M
HCO HYLEA METALS 0.2 0.006 500k 14.0M
ADO ANTEO DIAGNOSTIC 0.1875 0.019 2M 18.4M
FRX FLEXIROAM 0.170731707317 0.048 70k 7.9M
TSN TRANSACTION SOLU 0.166666666667 0.007 50k 13.0M
CHK COHIBA MINERALS 0.166666666667 0.007 2M 3.9M
ECT ENVIRONMENTAL 0.153846153846 0.015 1M 62.4M
KLH KALIA 0.142857142857 0.008 198k 17.6M
TTW TOPTUNG 0.142857142857 0.048 190k 6.4M
KSN KINGSTON 0.130434782609 0.026 238k 28.1M
VML VITAL METALS 0.125 0.009 572k 13.9M
RMX RED MOUNTAIN 0.125 0.009 300k 5.4M
EXO ENNOX GROUP 0.125 0.009 60k 10.2M
EVE EVE INVESTMENTS 0.125 0.009 5M 17.9M
CTM CENTAURUS METALS 0.125 0.009 4M 18.4M
CLI CROPLOGIC 0.125 0.036 50k 3.9M
SFG SEAFARMS GROUP 0.119565217391 0.103 186k 153.4M
MAY MELBANA ENERGY 0.117647058824 0.019 11M 28.4M
VAL VALOR RESOURCES 0.111111111111 0.01 2M 13.3M
LMG LATROBE MAGNESIU 0.111111111111 0.01 54k 11.3M

GOING DOWN

Biological separator Memphasys (ASX:MEM) was down 93 per cent today after shareholders approved a 15-for-1 stock consolidation.

Here are the worst performing ASX small cap stocks at 12.30pm Wednesday, Aug 8:

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ASX code Company Today's price change (12.30pm) Price (12.30pm) Volume Market Cap
MEM MEMPHASYS -0.933333333333 0.001 397k 5.1M
WCN WHITE CLIFF MINE -0.5 0.001 270k 7.7M
XPE XPED -0.25 0.003 4M 5.3M
SPX SPECTRUM RARE EARTHS -0.25 0.006 100k 5.7M
TPD TALON PETROLEUM -0.2 0.004 3M 5.1M
SYS SYNGAS -0.2 0.004 100k 3.1M
SUR SUN RESOURCES -0.2 0.004 126k 3.8M
BYH BRYAH RESOURCES -0.2 0.1 32k 7.0M
RGI ROTO-GRO -0.171428571429 0.29 34k 33.4M
XST XSTATE RESOURCES -0.166666666667 0.005 4M 4.7M
SDL SUNDANCE RESOURC -0.166666666667 0.005 9M 49.9M
PKO PEAKO -0.166666666667 0.01 87k 864.2k
GSN GREAT SOUTHERN -0.166666666667 0.05 31k 16.7M
OVL ORO VERDE -0.142857142857 0.006 2M 10.9M
MNC METMINCO -0.142857142857 0.006 1M 6.4M
DEV DEVEX RESOURCES -0.142857142857 0.006 69k 7.7M
BKP BARAKA ENERGY -0.142857142857 0.006 156k 18.9M
GO2 GO2 PEOPLE -0.136363636364 0.095 10k 13.0M
BEE BROO -0.133333333333 0.13 10k 91.2M
TSC TWENTY SEVEN -0.125 0.007 60k 4.7M
PMY PACIFICO MINERAL -0.125 0.007 100k 7.1M
E2E EON NRG -0.125 0.007 800k 3.3M
HOR HORSESHOES METAL -0.117647058824 0.015 387k 3.3M
MAG MAGMATIC RESOURC -0.111111111111 0.048 22k 6.7M
THX THUNDELARRA -0.111111111111 0.016 500k 11.4M
CZN CORAZON MINING -0.111111111111 0.008 277k 11.4M
AU1 AGENCY GROUP -0.111111111111 0.008 100k 6.2M
FEI FE INVESTMENTS -0.105263157895 0.085 10k 14.2M
MSE METALSEARCH -0.105263157895 0.017 140k 9.1M