After posting a small gain to start the week, the ASX Small Ords was trading flat at 2,731.20 at 12pm AEST.

Brent oil is holding near a three-month high above $US66 a barrel while gold is still well supported at $US1,325 an ounce. Iron ore prices were little-changed at $US88 a barrel.

Here are the key ASX small cap winners at lunch Tuesday February 18:

GOING UP

Gas play Leigh Creek Energy (LCK) is leading the pack today, after a positive update regarding its gasification project at the Leigh Creek Coalfield.

Shares in LCK were up more than 42 per cent at 12.7 cents in midday trade.

The company said its Pre-Commercial Demonstration (PCD) confirmed the existence of significant syngas reserves with a commercial application.

And listed e-sports company Emerge Gaming (ASX:EM1)  was up more than 16%, after announcing the March 2019 launch of its new ArcadeX gaming platform for the Australian market.

Other winners at midday included New World Cobalt (ASX: NWC), up 40 per cent, and Red Sky Energy (ASX: ROG), up 25 per cent.

Here are the best performing ASX small cap stocks at 12pm Monday February 18: 

ASX codeCompanyPrice 12:15pm ESTPercentage changeMarket capVolume
LCK Leigh Creek Energy 0.13+43.26%$60,400,0005.2M
NWC New World Cobalt 0.01+40.00%$7,700,000143.1k
ROG Red Sky Energy 0.0025+25.00%$1,600,000500.0k
CXZ Connexion Telematics 0.01+20.00%$10,900,0001.9M
NAE New Age Exploration 0.01+20.00%$4,300,000100.0k
QPR Quattro Plus Real Estate0.01+20.00%$69,300,0001.0M
RFN Reffind 0.01+20.00%$3,100,0001.3M
SPQ Superior Resources 0.01+20.00%$3,400,0004.1k
ALY Alchemy Resources 0.01+18.18%$5,700,000369.7k
CV1 CV Check 0.08+17.65%$21,800,000166.9k
KZR Kalamazoo Resources 0.09+16.88%$8,100,00047.0k
EM1 Emerge Gaming 0.01+16.67%$5,900,00015.8M
SYT Syntonic 0.01+16.67%$20,900,000870.7k
AQX Alice Queen 0.01+15.38%$9,800,00025.3k
SGC SACGASCO 0.03+15.38%$7,900,000846.6k
VRX VRX Silica 0.12+14.29%$42,400,000188.6k
RDG Resource Development Group 0.03+13.64%$15,800,000122.7k
HCH Hot Chili 0.02+13.33%$14,500,000463.8k
PGI PanTerra Gold 0.03+13.33%$7,200,000150.0k
FGF First Growth Funds 0.01+12.50%$14,000,0001.6M
LCK Leigh Creek Energy 0.13+43.26%$60,400,0005.2M

GOING DOWN

Selling activity among small-cap minnows has given rise to some sharp falls in the teeny-tiny end of the market.

Struggling US-based data sharing company Shareroot (ASX: SRO), and tiny cobalt miner Clancy Exploration (ASX: CLY) both saw their stock price halve to 1 cent per share.

The 50% decline for Shareroot took place amid volumes of 3.2 million, while 1.7 million Clancy Exploration shares changed hands.

Among other notable falls, junior gold miner 3D Resources (ASX:DDD) was down 33.33 per cent at 2 cents per share.

Here are the worst performing ASX small cap stocks at 12pm Monday February 18:  

ASX codeCompanyPrice 12:15pm ESTPercentage changeMarket capVolume
SRO Shareroot 0.001-50.00%$1,600,0003.2M
CLY Clancy Exploration 0.001-50.00%$3,500,0001.7M
DDD 3D Resources 0.001-33.33%$2,200,0002.0M
MGL Magontec 0.02-22.22%$29,600,000133.2k
ABV Advanced Braking Technology0.01-22.22%$5,300,000148.0k
SGO Stream Group 0.01-20.00%$2,600,000176.0k
WBE Whitebark Energy 0.004-20.00%$6,300,000400.0k
QGL Quantum Graphite 0.002-20.00%$15,000,000430.3k
LSR Lodestar Minerals 0.01-20.00%$7,500,000270.0k
ZNO Zoono Group 0.1-19.17%$15,800,000284.0k
KKT Konekt 0.2-18.00%$21,600,00043.2k
ABT Abundant Produce 0.14-17.65%$10,300,0007.5k
SMD Syndicated Metals 0.005-16.67%$3,200,00013.6M
PSZ PS&C 0.1-16.67%$25,000,0006.2k
TTL Transcendence Technologies 0.02-15.79%$2,800,0001.9M
ELK Elk Petroleum 0.02-15.79%$27,700,0006.6M
IMS Impelus 0.01-15.38%$7,400,0001.8M
TNT Tesserent 0.05-14.55%$7,900,00025.0k
SBB Sunbridge Group 0.01-14.29%$5,700,000100.0k
DDT DataDot Technology 0.01-14.29%$4,900,000611.1k
SM8 Smart Marine Systems 0.02-13.04%$2,600,000176.7k
TOM Tomizone 0.01-12.50%$3,000,00055.0k
BNL Big Star Energy 0.01-12.50%$2,300,00071.7k