cnbcs jim cramer on monday laid out a playbook for investors in the event the sp 500 pulls back from its highs if history is any guide next weeks gonna be ugly he said the mad money host offered the recommendation after reviewing chart analysis from noted technician larry williams who sees a pullback playing out next week if youre a nimble trader you might want to sell the sp at the opening next monday then swap back in near the end of the week cramer said even if youre not that nimble watch out for the weakness because it could create a nice buying opportunity the sp 500 has turned in three record closes in as many days finishing mondays session at 425515 williams who makes a habit of spotting seasonal patterns is warning about a latejune swoon cramer said whether its just a modest dip or a significant decline stocks tend to get hit near the end of the month according to williams cramer said he wouldnt bet against the forecast last year the index fell almost 5 from top to trough between june 23 and june 26 based on williams analysis shorting the market next week has been a good strategy for at least the last 22 years cramer said if the sp starts getting crushed i want you to remember that youre up against a powerful seasonal trend you want to start bottom fishing the seasonal pullback could be followed up by another pattern williams calls the fourth of july trade cramer highlighted last year the sp 500 bounced from under 3000 in late june rising more than 6 by july 10