Third Flatiron is open for submissions to their themed anthology Longevity from July 10- August 3, 2019. They are looking for stories between 1,500 and 3,000 words long, and pay rate is 8 cents a word. Full guidelines are here.
Miscreations is open to submissions and will close again August 31, 2019. They are looking for horror stories of between 2,000 and 5,000 words, and payment is 5 cents per word. You can find full guidelines here.
Deep Magic is now open for submissions and will close again on September 30, 2019. Payment is 6 cents per word and payment is capped at 10,000 words. They also buy reprints at 2 cents per word. Full guidelines are here.