Only reasons I can think of that Sia will go lower are:
1. Sia team quits (highly unlikely due to consistency of github updates)
2. Lack of new developments (crypto moves fast and investors/traders buy on hype/news hence why I am looking for a big move preceding November release)
3. BTCGold Airdrop (On 10-25 BTC will hardfork and holders will receive an airdrop of BTC Gold, similar to bitcoin cash, most people sell their altcoins in order to capitalize on the "free" money)
4. A major competitor makes a massive advancement. (ie storj signs a contract with dropbox)
5. SEC bans bitcoin or something similar to China (in which case we are in a massive bear market for another 1-2 years similar to 2010)
6. Aliens come to Earth and share their advanced blockchain technology with us.