On longer term horizon S&P/ASX 200 may test 3600 level but for that it needs time. For short to medium term it makes a pattern which can take it around 3850–3900 level, here it has an important support around 4050, which looks like that it broke or is trying to break.
Technically it is in over-sold zone, but in spite of that it can drop little more. In early days of the coming week it is important to look movements around 4000 level because in last week it did not able to break that level. So it may try that again. But if it again faces support in this 4000–4050 level then there is a good chance that it may reverse its position, therefore important resistance level is at around 4200–4250 but for that it needs to cross 4100 level.
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