5) Portfolio needs rebalancing
It could be as simple as your portfolio needing to be rebalanced. If you are in the throes of a bull market, your equity exposure may be way off mark. It would make sense to offload some stocks to bring the balance back in. You need not "sell", you could "reduce". In other words, you don't have to completely exit a stock but just decrease its position in your portfolio.
The squirrel strategy is one way to reduce your exposure either to the share market generally or to more speculative stocks if the outlook is a little cloudy, or simply if they've had a great run.
The "squirrel" constantly takes at least half the profits out of the speculative market and re-invests into something of long-term value. If times are booming, that might be cash for safety.
Squirrels are able to put enough away for a rainy day, without forgetting to enjoy the sunshine while it lasts!