MRK · Merck & Co., Inc.

$130.76 -0.31 (-0.24%) At close · Jul 27

Market Cap

$323.72B

2.47B

Total shares sold short and not yet covered, reported to FINRA by broker-dealers twice a month. Each reading settles on the 15th and the last business day of the month and is published seven business days later — the next scheduled dates are listed at the top of the table. Days to cover divides the short position by average daily volume; a high value (above 5) can signal short-squeeze potential.

Short Squeeze Score

50/100

Short interest 1.2% of shares — P42 Days to cover 3.4 — P51 Price vs VWAP +10.1% — P87 Short-volume trend +3.7% — P56 Short interest change -6.4% — P29 Worst FTD 0.00% of shares — P24

Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-07-15). Weighted mean of the available factors (short interest 30%, days to cover 20%, price vs VWAP 15%, short-volume trend 15%, short-interest change 10%, fails-to-deliver 10%) plus catalyst boosts (price spike, volume surge, earnings within days), capped at +20 and clamped to 100.

1M 3M 6M 1Y 5Y All

Short Interest History

Settlement Date	Current Position	Previous Position	Change	Avg Daily Volume	Days to Cover
2026-08-14 Scheduled FINRA publishes Aug 25	—	—	—	—	—
2026-07-31 Scheduled FINRA publishes Aug 11	—	—	—	—	—
2026-07-15	29,359,028	31,381,267	-2,022,239	8,575,599	3.42
2026-06-30	31,381,267	30,267,292	+1,113,975	13,647,853	2.30
2026-06-15	30,267,292	30,545,853	-278,561	11,784,643	2.57
2026-05-29	30,545,853	29,060,187	+1,485,666	9,991,704	3.06
2026-05-15	29,060,187	26,205,868	+2,854,319	8,011,358	3.63
2026-04-30	26,205,868	27,495,690	-1,289,822	10,261,130	2.55
2026-04-15	27,495,690	27,720,957	-225,267	8,313,273	3.31
2026-03-31	27,720,957	29,144,880	-1,423,923	10,965,147	2.53
2026-03-13	29,144,880	31,115,811	-1,970,931	9,522,427	3.06
2026-02-27	31,115,811	28,130,031	+2,985,780	10,360,814	3.00
2026-02-13	28,130,031	28,729,402	-599,371	16,529,127	1.70
2026-01-30	28,729,402	33,654,686	-4,925,284	12,072,510	2.38
2026-01-15	33,654,686	32,573,724	+1,080,962	13,172,764	2.55
2025-12-31	32,573,724	37,162,304	-4,588,580	13,965,417	2.33
2025-12-15	37,162,304	31,943,311	+5,218,993	14,121,374	2.63
2025-11-28	31,943,311	27,626,151	+4,317,160	18,022,575	1.77
2025-11-14	27,626,151	25,815,354	+1,810,797	12,867,044	2.15
2025-10-31	25,815,354	26,700,419	-885,065	10,250,522	2.52
2025-10-15	26,700,419	25,174,694	+1,525,725	12,669,726	2.11
2025-09-30	25,174,694	27,709,865	-2,535,171	14,294,134	1.76
2025-09-15	27,709,865	23,829,923	+3,879,942	11,593,137	2.39
2025-08-29	23,829,923	25,529,478	-1,699,555	11,677,912	2.04
2025-08-15	25,529,478	25,879,122	-349,644	10,347,050	2.47
2025-07-31	25,879,122	28,773,023	-2,893,901	13,142,729	1.97

Showing 1–24 of 24 settlements

Key facts CIK 310158 CUSIP 58933Y105 13F (30d) 1457 filings 1408 filers Visit website Investor relations