Lightning Round: Ring the register on Opendoor, don't be in a meme stock, says Jim Cramer

Stock Recommendations - Open Door was considered a speculative stock pick, initially bought at $1.71, with advice to "ring the register" to avoid meme stock territory [2] - Terra Wolf is considered a low-quality stock to avoid [3] - Hubble is viewed as a fantastic American industrial company, recommended to stay long, but to wait for a price dip before buying more [4][5] - Lumenum Holdings experienced an upside explosion after years of stagnation; the recommendation is to sell half the position on Monday morning and play with the "house's money" [5][6] - Summit Therapeutics' drug for cancer screening had bad news, and the recommendation is to move on, as it's unlikely to recover [7] General Investment Strategy - The focus is on high-quality stocks [3] - Insider buying is noted, but there's no rush to exit the position, although the speaker is not enthusiastic about it [8] Program Information - The Lightning Round is sponsored by Charles Schwab [8] - Viewers can follow Jim Kramer on X (formerly Twitter) and use madmentions to ask questions [8] - Viewers can send emails to madmoney@cnbc.com or call 1-800-743-CNNBC [8] - Missed segments can be found at madmoney.cnbc.com [9]