At the start of every trading day, it can be useful to know which stocks are humming out of the gate.

Large percentage moves in small caps aren’t uncommon, but sometimes a big announcement can cause a stock to rocket higher (or fall).

Stockhead’s Top 10 at 10 highlights the best (and worst) performing ASX small caps in morning trade.

The market opens at 10am (eastern time) and the data is taken at 10:15am, once every stock has commenced trading.

Stocks highlighted in yellow have made potentially market-moving announcements:

CodeNamePrice ($)% ChgVolume
SURSun Resources NL0.002+100.00%1.0M
IDZIndoor Skydiving Australia Group0.01+87.50%719.1k
ADVArdiden Ltd0.003+50.00%328.0k
CADCaeneus Minerals Ltd0.0015+50.00%105.5k
CLZClassic Minerals Ltd0.0015+50.00%850.0k
TSCTwenty Seven Co Ltd0.003+50.00%250.0k
RXHRewardle Holdings Ltd0.004+33.33%65.3k
HORHorseshoe Metals Ltd0.01+28.57%25.0k
NORNorwood Systems Ltd0.005+25.00%3.0M
WCNWhite Cliff Minerals Ltd0+25.00%1.0M

Sun Resources (ASX: SUR) got a double up courtesty of a new share placement to sophisticated investors. The company plans to issue 75m shares at 0.2 cents to raise $150k.

And Indoor Skydive Australia Group (ASX:IDZ) also surged after the company announced it had entered into an agreement for the sale of its Perth indoor skydiving facility.

These 10 stocks fell behind the pack at the opening bell:

CodeNamePrice ($)% ChgVolume
XSTXState Resources Ltd0.002-33.33%100.0k
SBRSabre Resources Ltd0.003-25.00%100.0k
RFNReffind Ltd0.003-25.00%2.0k
MGLMagontec Ltd0.03-24.24%588k
UTRUltracharge Ltd0.002-20.00%83.4k
OVLOro Verde Ltd0.002-20.00%102.3k
ANLAmani Gold Ltd0.002-20.00%186.9k
FNTFrontier Resources Ltd0.01-17.65%3.1M
PSMPeninsula Mines Ltd0.0025-16.67%167.7k
MRQMRG Metals Ltd0.005-16.67%250.0k