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MRNA Short Squeeze Risk Tracker: Data and Analysis

Last Updated: 2025-11-28

Access the latest MRNA short interest history, Days to Cover (DTC) trend, and the proprietary Short Squeeze Score for risk assessment.

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Short Squeeze Risk Assessment

MRNA Short Squeeze Score

0.61

High short squeeze risk. Significant short pressure combined with low liquidity. Potential for a sharp upward movement.

The Squeeze Score quantifies the current short squeeze risk by analyzing short interest, Days to Cover, and market liquidity. Use this score to quickly identify the most shorted stocks with the highest squeeze potential.

  • 0.0–0.2: Very low short squeeze risk.
  • 0.2–0.4: Low short squeeze potential.
  • 0.4–0.6: Moderate short squeeze risk.
  • 0.6–0.8: High short squeeze risk.
  • 0.8–1.0: Extreme short squeeze risk.

Short Interest Ratio (% of Float)

18.69%

The Short Interest Ratio (or % of Float) is the most critical metric for identifying the most shorted stocks. It reflects the percentage of available trading shares currently sold short.

Interpretation:

  • 0%–5%: Very low short interest, minimal squeeze risk.
  • 5%–10%: Moderate short interest, watch for trends.
  • 10%–20%: High short interest, potential for squeeze.
  • >20%: Extremely high, short squeeze risk elevated.

Key Short Selling Metrics

Total Short Interest Shares
68,075,313
Shares sold short as of 2025-11-28

High short interest, indicating significant bearish sentiment.

Days to Cover (DTC)
7.27

Short interest ÷ average daily volume.

A long covering period (over 5 days), indicating short sellers may face difficulty covering in a rush.

Bi-weekly Change in Short Interest
5.78%
3719219
Vs previous report.

Moderate increase in short interest, potential buildup of pressure.

Historical Data Coverage
166

Bi-weekly observations in the stored history.

High coverage with extensive historical data, trends are more reliable for analysis.

Short Interest Historical Charts

Explore the short interest trend, bi-weekly changes, and Days to Cover (DTC). Use the range selector to view different historical windows.

Short Interest (Total Shares)

Bi-Weekly Change (%)

Days to Cover (DTC)

Full Short Interest History (FINRA Bi-Weekly)

Complete FINRA bi-weekly short interest history for MRNA.
This table includes total short interest, prior period values, percentage change,average daily volume, and Days to Cover (DTC), a key indicator of potential short squeeze risk.
Date Short Interest Prior Change % Change # Avg Volume DTC
2025-11-28 68,075,313 64,356,094 5.78% 3,719,219 9,366,839 7.27
2025-11-14 64,356,094 63,656,197 1.10% 699,897 11,379,459 5.66
2025-10-31 63,656,197 65,036,951 -2.12% -1,380,754 12,160,619 5.23
2025-10-15 65,036,951 64,337,988 1.09% 698,963 9,397,529 6.92
2025-09-30 64,337,988 63,310,000 1.62% 1,027,988 11,546,655 5.57
2025-09-15 63,310,000 59,842,399 5.79% 3,467,601 13,053,475 4.85
2025-08-29 59,842,399 62,826,303 -4.75% -2,983,904 9,612,400 6.23
2025-08-15 62,826,303 63,015,386 -0.30% -189,083 9,004,764 6.98
2025-07-31 63,015,386 66,236,681 -4.86% -3,221,295 7,648,881 8.24
2025-07-15 66,236,681 65,594,054 0.98% 642,627 10,714,408 6.18
2025-06-30 65,594,054 63,564,116 3.19% 2,029,938 9,119,935 7.19
2025-06-13 63,564,116 65,855,374 -3.48% -2,291,258 9,349,096 6.80
2025-05-30 65,855,374 67,270,523 -2.10% -1,415,149 16,710,119 3.94
2025-05-15 67,270,523 60,217,408 11.71% 7,053,115 11,666,078 5.77
2025-04-30 60,217,408 56,305,788 6.95% 3,911,620 6,306,485 9.55
2025-04-15 56,305,788 49,799,445 13.07% 6,506,343 11,201,592 5.03
2025-03-31 49,799,445 46,881,859 6.22% 2,917,586 8,255,143 6.03
2025-03-14 46,881,859 45,063,081 4.04% 1,818,778 11,271,564 4.16
2025-02-28 45,063,081 42,296,108 6.54% 2,766,973 11,837,325 3.81
2025-02-14 42,296,108 40,600,489 4.18% 1,695,619 13,226,877 3.20
2025-01-31 40,600,489 43,006,951 -5.60% -2,406,462 12,117,430 3.35
2025-01-15 43,006,951 37,847,737 13.63% 5,159,214 12,865,489 3.34
2024-12-31 37,847,737 39,488,336 -4.15% -1,640,599 8,631,499 4.38
2024-12-13 39,488,336 40,837,234 -3.30% -1,348,898 6,869,131 5.75
2024-11-29 40,837,234 39,863,421 2.44% 973,813 9,292,568 4.39
2024-11-15 39,863,421 34,383,773 15.94% 5,479,648 11,579,058 3.44
2024-10-31 34,383,773 33,260,603 3.38% 1,123,170 4,475,946 7.68
2024-10-15 33,260,603 31,324,987 6.18% 1,935,616 4,467,349 7.45
2024-09-30 31,324,987 27,613,114 13.44% 3,711,873 5,716,544 5.48
2024-09-13 27,613,114 25,632,195 7.73% 1,980,919 6,967,316 3.96
2024-08-30 25,632,195 25,003,118 2.52% 629,077 3,478,796 7.37
2024-08-15 25,003,118 22,589,988 10.68% 2,413,130 5,818,063 4.30
2024-07-31 22,589,988 22,738,949 -0.66% -148,961 2,413,998 9.36
2024-07-15 22,738,949 22,128,568 2.76% 610,381 3,050,153 7.46
2024-06-28 22,128,568 21,604,553 2.43% 524,015 4,310,074 5.13
2024-06-14 21,604,553 20,182,172 7.05% 1,422,381 3,411,484 6.33
2024-05-31 20,182,172 21,430,188 -5.82% -1,248,016 5,680,546 3.55
2024-05-15 21,430,188 21,072,029 1.70% 358,159 4,274,896 5.01
2024-04-30 21,072,029 20,981,181 0.43% 90,848 2,546,054 8.28
2024-04-15 20,981,181 21,440,903 -2.14% -459,722 3,425,541 6.12
2024-03-28 21,440,903 22,227,123 -3.54% -786,220 3,401,520 6.30
2024-03-15 22,227,123 22,110,763 0.53% 116,360 4,520,181 4.92
2024-02-29 22,110,763 24,075,416 -8.16% -1,964,653 4,644,729 4.76
2024-02-15 24,075,416 20,879,886 15.30% 3,195,530 3,940,209 6.11
2024-01-31 20,879,886 23,065,749 -9.48% -2,185,863 3,300,132 6.33
2024-01-12 23,065,749 24,194,228 -4.66% -1,128,479 6,763,987 3.41
2023-12-29 24,194,228 21,884,094 10.56% 2,310,134 5,149,068 4.70
2023-12-15 21,884,094 21,985,865 -0.46% -101,771 6,487,912 3.37
2023-11-30 21,985,865 22,381,208 -1.77% -395,343 2,756,792 7.98
2023-11-15 22,381,208 19,609,650 14.13% 2,771,558 5,657,604 3.96
2023-10-31 19,609,650 18,051,859 8.63% 1,557,791 5,191,352 3.78
2023-10-13 18,051,859 18,474,831 -2.29% -422,972 2,691,334 6.71
2023-09-29 18,474,831 18,161,755 1.72% 313,076 3,424,620 5.39
2023-09-15 18,161,755 18,050,736 0.62% 111,019 4,009,487 4.53
2023-08-31 18,050,736 17,215,204 4.85% 835,532 4,462,858 4.04
2023-08-15 17,215,204 15,768,587 9.17% 1,446,617 4,564,651 3.77
2023-07-31 15,768,587 15,510,472 1.66% 258,115 3,254,582 4.85
2023-07-14 15,510,472 17,563,091 -11.69% -2,052,619 3,230,600 4.80
2023-06-30 17,563,091 18,324,086 -4.15% -760,995 3,049,615 5.76
2023-06-15 18,324,086 18,719,582 -2.11% -395,496 2,730,732 6.71
2023-05-31 18,719,582 18,220,045 2.74% 499,537 3,728,765 5.02
2023-05-15 18,219,875 17,852,645 2.06% 367,230 3,128,164 5.82
2023-04-28 17,852,645 16,700,743 6.90% 1,151,902 4,130,093 4.32
2023-04-14 16,700,743 17,154,781 -2.65% -454,038 3,203,204 5.21
2023-03-31 17,154,781 15,886,430 7.98% 1,268,351 2,897,298 5.92
2023-03-15 15,886,430 15,680,559 1.31% 205,871 3,530,356 4.50
2023-02-28 15,680,559 14,672,802 6.87% 1,007,757 4,743,348 3.31
2023-02-15 14,672,802 14,134,195 3.81% 538,607 3,088,011 4.75
2023-01-31 14,134,195 14,042,188 0.66% 92,007 4,092,145 3.45
2023-01-13 14,042,188 14,041,300 0.01% 888 3,371,957 4.16
2022-12-30 14,041,300 16,672,917 -15.78% -2,631,617 6,657,674 2.11
2022-12-15 16,672,917 16,665,211 0.05% 7,706 7,905,846 2.11
2022-11-30 16,665,211 15,975,146 4.32% 690,065 3,096,087 5.38
2022-11-15 15,975,146 16,475,414 -3.04% -500,268 5,333,307 3.00
2022-10-31 16,475,414 16,161,873 1.94% 313,541 5,011,061 3.29
2022-10-14 16,161,873 15,807,633 2.24% 354,240 4,885,379 3.31
2022-09-30 15,807,633 16,338,178 -3.25% -530,545 5,360,007 2.95
2022-09-15 16,338,178 15,205,748 7.45% 1,132,430 5,060,770 3.23
2022-08-31 15,205,748 14,977,633 1.52% 228,115 4,358,066 3.49
2022-08-15 14,977,633 14,731,988 1.67% 245,645 5,165,049 2.90
2022-07-29 14,731,988 16,288,330 -9.55% -1,556,342 3,169,054 4.65
2022-07-15 16,288,330 14,252,649 14.28% 2,035,681 5,757,707 2.83
2022-06-30 14,252,649 14,764,072 -3.46% -511,423 5,429,952 2.62
2022-06-15 14,764,072 15,516,223 -4.85% -752,151 5,407,368 2.73
2022-05-31 15,516,223 17,062,779 -9.06% -1,546,556 5,972,110 2.60
2022-05-13 17,062,779 15,428,842 10.59% 1,633,937 7,861,345 2.17
2022-04-29 15,428,842 16,005,028 -3.60% -576,186 5,188,498 2.97
2022-04-14 16,005,028 16,211,246 -1.27% -206,218 5,717,044 2.80
2022-03-31 16,211,246 17,259,360 -6.07% -1,048,114 8,071,529 2.01
2022-03-15 17,259,360 17,608,774 -1.98% -349,414 8,116,887 2.13
2022-02-28 17,608,774 16,460,271 6.98% 1,148,503 7,778,214 2.26
2022-02-15 16,460,271 16,028,740 2.69% 431,531 7,055,901 2.33
2022-01-31 16,028,740 15,800,646 1.44% 228,094 10,633,778 1.51
2022-01-14 15,800,646 16,688,182 -5.32% -887,536 9,219,568 1.71
2021-12-31 16,688,182 15,356,147 8.67% 1,332,035 9,956,464 1.68
2021-12-15 15,356,147 15,287,229 0.45% 68,918 12,323,886 1.25
2021-11-30 15,287,229 14,572,308 4.91% 714,921 15,580,248 1.00
2021-11-15 14,572,308 13,011,976 11.99% 1,560,332 15,083,388 1.00
2021-10-29 13,011,976 14,798,055 -12.07% -1,786,079 6,575,435 1.98
2021-10-15 14,798,055 14,330,276 3.26% 467,779 15,761,113 1.00
2021-09-30 14,330,276 14,298,039 0.23% 32,237 13,130,903 1.09
2021-09-15 14,298,039 13,769,942 3.84% 528,097 13,939,936 1.03
2021-08-31 13,769,942 15,397,507 -10.57% -1,627,565 15,695,222 1.00
2021-08-13 15,397,507 18,808,647 -18.14% -3,411,140 29,353,291 1.00
2021-07-30 18,808,647 13,647,794 37.81% 5,160,853 31,373,871 1.00
2021-07-15 13,647,794 12,463,613 9.50% 1,184,181 6,946,830 1.96
2021-06-30 12,463,613 14,329,025 -13.02% -1,865,412 9,007,331 1.38
2021-06-15 14,329,025 11,831,679 21.11% 2,497,346 10,093,947 1.42
2021-05-28 11,832,764 11,945,405 -0.94% -112,641 5,288,397 2.24
2021-05-14 11,945,405 12,936,094 -7.66% -990,689 12,017,103 1.00
2021-04-30 12,936,094 11,844,093 9.22% 1,092,001 10,355,777 1.25
2021-04-15 11,844,093 12,952,340 -8.56% -1,108,247 7,380,024 1.60
2021-03-31 12,952,340 14,965,253 -13.45% -2,012,913 7,856,302 1.65
2021-03-15 14,965,253 13,289,767 12.61% 1,675,486 8,530,729 1.75
2021-02-26 13,289,767 14,687,799 -9.52% -1,398,032 8,494,004 1.56
2021-02-12 14,687,799 19,978,798 -26.48% -5,290,999 10,139,572 1.45
2021-01-29 19,978,798 24,795,345 -19.43% -4,816,547 15,079,248 1.32
2021-01-15 24,795,345 23,385,715 6.03% 1,409,630 15,180,913 1.63
2020-12-31 23,385,715 25,583,875 -8.59% -2,198,160 26,106,537 1.00
2020-12-15 25,583,875 27,639,794 -7.44% -2,055,919 37,189,897 1.00
2020-11-30 27,639,794 24,680,085 11.99% 2,959,709 24,798,299 1.11
2020-11-13 24,680,085 25,231,326 -2.18% -551,241 9,571,750 2.58
2020-10-30 25,231,326 27,342,464 -7.72% -2,111,138 5,272,923 4.79
2020-10-15 27,342,397 30,247,726 -9.61% -2,905,329 6,308,388 4.33
2020-09-30 30,247,726 28,223,553 7.17% 2,024,173 7,954,164 3.80
2020-09-15 28,223,553 28,016,993 0.74% 206,560 9,268,962 3.04
2020-08-31 28,016,993 31,657,060 -11.50% -3,640,067 9,736,442 2.88
2020-08-14 31,657,060 27,186,163 16.45% 4,470,897 15,597,986 2.03
2020-07-31 27,186,163 24,707,351 10.03% 2,478,812 36,202,025 1.00
2020-07-15 24,707,351 28,635,375 -13.72% -3,928,024 19,406,844 1.27
2020-06-30 28,635,375 28,764,174 -0.45% -128,799 13,270,152 2.16
2020-06-15 28,764,174 22,864,053 25.81% 5,900,121 15,319,550 1.88
2020-05-29 22,864,053 19,978,783 14.44% 2,885,270 43,957,156 1.00
2020-05-15 19,978,783 22,328,821 -10.52% -2,350,038 18,172,367 1.10
2020-04-30 22,201,292 23,875,786 -7.01% -1,674,494 18,498,315 1.20
2020-04-15 23,875,786 23,660,078 0.91% 215,708 8,333,278 2.87
2020-03-31 23,660,078 21,327,317 10.94% 2,332,761 19,000,649 1.25
2020-03-13 21,327,317 20,151,903 5.83% 1,175,414 15,139,836 1.41
2020-02-28 20,151,903 17,130,631 17.64% 3,021,272 28,703,045 1.00
2020-02-14 17,130,631 18,747,431 -8.62% -1,616,800 6,131,585 2.79
2020-01-31 18,747,431 20,157,741 -7.00% -1,410,310 4,682,457 4.00
2020-01-15 20,157,741 18,986,938 6.17% 1,170,803 1,708,276 11.80
2019-12-31 18,986,938 14,618,871 29.88% 4,368,067 2,089,694 9.09
2019-12-13 14,618,871 18,873,716 -22.54% -4,254,845 1,693,853 8.63
2019-11-29 18,873,716 18,974,829 -0.53% -101,113 1,472,697 12.82
2019-11-15 18,974,829 20,585,217 -7.82% -1,610,388 1,604,152 11.83
2019-10-31 20,585,217 23,520,713 -12.48% -2,935,496 983,418 20.93
2019-10-15 23,520,713 24,033,374 -2.13% -512,661 1,381,126 17.03
2019-09-30 24,033,374 15,020,946 60.00% 9,012,428 6,057,988 3.97
2019-09-13 15,020,946 12,763,189 17.69% 2,257,757 3,101,372 4.84
2019-08-30 12,763,189 12,077,840 5.67% 685,349 1,905,295 6.70
2019-08-15 12,077,840 11,466,219 5.33% 611,621 1,345,735 8.97
2019-07-31 11,466,219 10,315,117 11.16% 1,151,102 1,083,543 10.58
2019-07-15 10,315,117 9,505,353 8.52% 809,764 1,065,034 9.69
2019-06-28 9,505,353 9,435,144 0.74% 70,209 1,661,665 5.72
2019-06-14 9,435,144 10,739,414 -12.14% -1,304,270 2,883,731 3.27
2019-05-31 10,739,189 11,210,082 -4.20% -470,893 610,503 17.59
2019-05-15 11,210,082 11,919,773 -5.95% -709,691 778,630 14.40
2019-04-30 11,919,773 12,446,253 -4.23% -526,480 730,527 16.32
2019-04-15 12,446,253 13,770,020 -9.61% -1,323,767 1,129,755 11.02
2019-03-29 13,770,020 12,757,904 7.93% 1,012,116 742,950 18.53
2019-03-15 12,757,904 12,269,113 3.98% 488,791 1,151,631 11.08
2019-02-28 12,269,113 11,443,101 7.22% 826,012 1,280,784 9.58
2019-02-15 11,443,101 9,349,410 22.39% 2,093,691 878,141 13.03
2019-01-31 9,349,410 8,266,866 13.09% 1,082,544 742,773 12.59
2019-01-15 8,266,866 6,480,950 27.56% 1,785,916 1,237,257 6.68

Frequently Asked Questions (FAQ)

What is short interest?

Short interest represents the number of shares sold short but not yet covered. It reflects bearish sentiment and short-selling pressure.

What does Short Interest % of Float mean?

This metric indicates what percentage of a company’s tradable float is currently held as short positions. Higher percentages imply stronger short pressure.

What is considered high short interest?

Typically:
• 5%–10%: Moderate
• 10%–20%: High
• 20%+: Extremely high with elevated squeeze risk

What is a short squeeze?

A short squeeze occurs when short sellers rush to cover their positions as the stock price rises, accelerating the upward movement.

What is Days to Cover (DTC)?

Days to Cover equals short interest divided by average daily trading volume. Higher DTC means shorts need more time to exit their positions.

What level of Days to Cover is risky?

• <2 days: Low risk
• 2–5 days: Moderate
• 5+ days: High squeeze potential
• 7–10 days: Extreme risk zone

What causes a short squeeze?

Common triggers include strong earnings, breakouts, upgrades, high volume, low float, or extreme short interest combined with rising prices.

What is a Short Squeeze Score?

It is a composite rating reflecting squeeze risk using short interest, DTC, liquidity, and momentum factors.

Can a stock with low short interest still squeeze?

Yes. Low float or sudden momentum can still trigger squeezes, though the probability is lower than highly shorted stocks.

How often is short interest updated?

FINRA updates short interest twice each month (bi-weekly). Market platforms refresh once the data is released.

Does short interest data get delayed during a U.S. government shutdown?

FINRA is not a government agency, so its operations do not stop during a federal shutdown. However, short interest data can still be delayed indirectly because the reporting and regulatory infrastructure involves broker-dealers and certain SEC processes.

During prolonged shutdowns, minor delays have occurred historically, but FINRA generally continues releasing bi-weekly short interest updates with minimal disruption.

Are short squeezes predictable?

You can identify high-risk conditions, but timing is inherently uncertain. A squeeze requires both high short interest and positive momentum.

Does high short interest guarantee a squeeze?

No. High short interest often reflects negative fundamental expectations and may not result in a squeeze if price pressure does not rise.

Is MRNA currently a highly shorted stock?

This depends on the latest Short Interest % of Float shown above. Levels above 10% are considered high, while above 20% are extremely elevated.

What is the current short squeeze risk for MRNA?

The Short Squeeze Score at the top of this page provides a real-time assessment of squeeze probability for MRNA.

Is MRNA a potential short squeeze candidate?

If MRNA has high short interest, elevated DTC, or strong upward momentum, the risk of a squeeze increases significantly.

What is the Days to Cover for MRNA?

The DTC value for MRNA displayed above reflects how long it may take short sellers to exit their positions.

What is the short interest trend for MRNA?

The bi-weekly short interest history on this page shows whether bearish positioning in MRNA is increasing or decreasing.

Has short interest in MRNA increased recently?

The “Change in Short Interest” indicator above reports the most recent change from the previous FINRA update.

What short interest level is considered risky for MRNA?

Typically, squeeze risk for MRNA becomes elevated when short interest exceeds 10%–20% of float.

How does MRNA compare to other heavily shorted stocks?

The Short Squeeze Score allows direct comparison between MRNA and other high-SI stocks in the market.

What historical short interest data is available for MRNA?

This dashboard includes all available bi-weekly FINRA short interest records for MRNA.

Does MRNA have low float or liquidity risks?

Low float or poor liquidity magnifies squeeze potential. These attributes indirectly influence MRNA’s Short Squeeze Score.

How often is MRNA’s short interest updated?

MRNA’s short interest is refreshed with each new FINRA bi-weekly update.

What events could trigger a squeeze in MRNA?

Potential triggers include positive earnings, analyst upgrades, high-volume breakouts, or unexpected catalysts that push MRNA sharply upward.