7 Long-Term Sleeper Stocks to Buy Before Wall Street Wakes Up Generally speaking, the equities sector represents the collective valuation of all publicly available information about exchange-listed companies, making the notion of long-term sleeper stocks to buy a rather risky concept. Nevertheless, individual investors can’t be all places at all times. Occasionally, a few compelling ideas slip through the cracks, presenting upside opportunities for intrepid investors. Before we get started, readers should realize that the below long-term sleeper stocks to buy align with the higher-risk, higher-reward spectrum of market ideas. Fundamentally, they require a belief in a thesis that may not have materialized, but very well could over time. Therefore, the reward potential is quite high for these long-term bets. On the other hand, no guarantees exist that the presented theses will pan out as advertised. Therefore, investors should approach these long-term sleeper stocks to buy with a healthy dose of cautious optimism. KSCP Knightscope $2.53 SUNL Sunlight Financial $2.56 OPI Office Properties Income $14.09 VALE Vale $12.54 SBSW Sibanye Stillwater $8.37 AMP Ameriprise Financial $250.97 AQN Algonquin Power Utilities $11.69 Knightscope (KSCP) Source: Have a nice day Photo|Shutterstock A security camera and robotics firm, Knightscope (NASDAQ: KSCP ) specializes in autonomous security robots or ASRs.