Share sales by funds when the sp rises are not surprising. The fund may find that its, say, 2.5% target holding has become 3% due to the rise in WLF sp relative to the overall value of the portfolio and it will therefore reduce by 16.7% of 3% to get back to the 2.5% target. If it started with 600k shares it will then have 500k but the same relative value of investment.
Other funds generally will take up the slack in the supply/demand of a promising share which is why the price rises in the first place and continues to hold in the face of the sales.