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Lam Research Corp. short interest

28.3M shares of Lam Research were sold short at the 15 October 2026 settlement, near the middle of its range over the last year (25.8M to 34.1M). Short sellers would need 3.6 days of normal trading to buy them back.

Shares sold short28.3Mat 15 Oct 2026
Change on the settlement before+9.7%-13% over a year
Days to cover3.59at 7.9M shares a day
Of shares in issue2.27%shares short over shares outstanding
New to this? How to read this page
  1. Short interest is the number of shares investors have borrowed and sold, betting the price will fall, and not yet bought back.
  2. Days to cover is shares short over an average day's trading: how many days it would take short sellers to buy them all back. Above 5 or so is high.
  3. Rising short interest says more investors are betting against the stock. A crowded short can also rise fast if shorts rush to buy back.
  4. Brokers report it twice a month to FINRA, about ten days after each settlement date.
  5. What is short interest?

Short interest, days to cover and the price

Short interest is near the middle of its range over the last year (25.8M to 34.1M), and the share price moved +38% over the last year.

Shares sold shortDays to coverShare price

Three charts on one timeline. Top: shares sold short at each settlement. Middle: days to cover, taller meaning shorts would need longer to buy back. Bottom: the share price, so you can see whether shorts added as the price fell or rose. Counts before a split are restated to today's shares, the way the price is.

How it compares

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    Every settlement since 29 Dec 2017 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 202628.3M+9.7%7.9M3.59
    30 September 202625.8M-1.0%9.8M2.62
    15 September 202626.1M-6.0%8.5M3.08
    31 August 202627.8M-2.4%7.3M3.79
    14 August 202628.4M+5.4%8.7M3.27
    31 July 202627.0M-8.7%12.2M2.22
    15 July 202629.5M+4.3%12.3M2.41
    30 June 202628.3M-5.2%15.4M1.84
    15 June 202629.9M-6.8%11.2M2.67
    29 May 202632.1M-2.6%8.8M3.64
    15 May 202632.9M+15.3%9.3M3.55
    30 April 202628.6M+9.6%9.3M3.05
    15 April 202626.1M-6.8%8.6M3.04
    31 March 202628.0M+3.8%11.5M2.44
    13 March 202626.9M+3.2%10.4M2.59
    27 February 202626.1M-20.7%8.7M3.00
    13 February 202632.9M+7.8%11.7M2.80
    30 January 202630.6M-2.2%13.2M2.32
    15 January 202631.2M-5.7%14.7M2.12
    31 December 202533.1M+0.9%10.4M3.17
    15 December 202532.8M-3.7%9.4M3.51
    28 November 202534.1M+2.8%11.8M2.88
    14 November 202533.2M-0.5%10.6M3.11
    31 October 202533.3M+2.9%10.8M3.08
    15 October 202532.4M+9.0%12.5M2.59
    30 September 202529.7M-4.4%12.3M2.41
    15 September 202531.1M-1.6%11.0M2.82
    29 August 202531.6M-7.4%10.4M3.03
    15 August 202534.1M+18.4%12.3M2.78
    31 July 202528.8M-4.5%11.5M2.50
    15 July 202530.2M-1.7%8.4M3.59
    30 June 202530.7M+23.3%11.6M2.65
    13 June 202524.9M-0.1%9.6M2.59
    30 May 202524.9M-9.6%9.4M2.64
    15 May 202527.6M+17.6%10.4M2.64
    30 April 202523.5M+0.2%13.1M1.78
    15 April 202523.4M-1.0%17.6M1.33
    31 March 202523.7M-7.5%9.8M2.41
    14 March 202525.6M+2.8%13.5M1.89
    28 February 202524.9M-14.3%15.6M1.59
    14 February 202529.0M-14.0%10.1M2.87
    31 January 202533.7M-9.8%15.1M2.24
    15 January 202537.4M+9.8%10.2M3.68
    31 December 202434.1M+7.0%12.2M2.80
    13 December 202431.8M-5.5%11.5M2.78
    29 November 202433.7M+4.4%10.3M3.27
    15 November 202432.3M-0.8%10.5M3.07
    31 October 202432.5M+10.9%15.8M2.07
    15 October 202429.3M-9.0%10.3M2.86
    30 September 202432.2M+46.2%14.0M2.30
    13 September 202422.0M-14.1%13.3M1.66
    30 August 202425.7M+7.1%10.9M2.36
    15 August 202424.0M+14.2%15.8M1.52
    31 July 202421.0M-17.5%13.4M1.57
    15 July 202425.4M+1.9%7.2M3.52
    28 June 202424.9M+7.4%11.4M2.19
    14 June 202423.2M-8.4%8.6M2.70
    31 May 202425.4M+7.6%9.8M2.59
    15 May 202423.6M-5.2%7.0M3.35
    30 April 202424.9M-2.4%13.6M1.83
    15 April 202425.5M-0.9%7.4M3.46
    28 March 202425.7M+6.3%7.9M3.24
    15 March 202424.2M+5.4%12.4M1.95
    29 February 202423.0M-11.9%9.0M2.54
    15 February 202426.1M+7.9%10.4M2.52
    31 January 202424.2M-13.9%14.0M1.73
    12 January 202428.1M-5.1%8.4M3.33
    29 December 202329.6M+3.4%7.6M3.88
    15 December 202328.6M+21.4%11.1M2.58
    30 November 202323.5M-14.9%8.6M2.75
    15 November 202327.7M-2.1%9.5M2.91
    31 October 202328.3M-0.4%11.5M2.47
    13 October 202328.4M-0.2%9.3M3.05
    29 September 202328.5M+8.2%10.5M2.71
    15 September 202326.3M-5.8%11.0M2.39
    31 August 202327.9M-0.1%9.2M3.03
    15 August 202328.0M-10.8%10.0M2.79
    31 July 202331.3M+1.8%15.6M2.00
    14 July 202330.8M+0.1%10.5M2.92
    30 June 202330.8M-6.1%13.1M2.36
    15 June 202332.8M-3.5%12.3M2.67
    31 May 202334.0M+19.2%16.5M2.06
    15 May 202328.5M+9.1%10.4M2.73
    28 April 202326.1M-9.1%16.0M1.63
    14 April 202328.7M+1.6%11.5M2.51
    31 March 202328.3M+22.9%14.2M1.98
    15 March 202323.0M-9.5%11.1M2.07
    28 February 202325.4M+3.8%11.0M2.30
    15 February 202324.5M-9.5%12.6M1.95
    31 January 202327.0M+6.4%14.8M1.83
    13 January 202325.4M+9.7%12.6M2.01
    30 December 202223.1M-9.8%12.7M1.82
    15 December 202225.7M+2.1%12.0M2.14
    30 November 202225.1M-28.4%14.0M1.80
    15 November 202235.1M+6.5%22.0M1.60
    31 October 202233.0M+49.4%27.9M1.18
    14 October 202222.1M+2.2%29.6M1.00
    30 September 202221.6M+10.5%13.1M1.65
    15 September 202219.6M+6.7%13.3M1.47
    31 August 202218.3M-15.7%12.4M1.48
    15 August 202221.7M+25.1%16.4M1.32
    29 July 202217.4M+2.4%15.6M1.11
    15 July 202217.0M-1.4%14.5M1.17
    30 June 202217.2M-39.8%12.2M1.41
    15 June 202228.6M+61.2%11.3M2.53
    31 May 202217.8M+23.8%13.4M1.33
    13 May 202214.3M+4.5%13.7M1.04
    29 April 202213.7M+0.1%16.3M1.00
    14 April 202213.7M-1.7%13.4M1.02
    31 March 202214.0M-21.2%12.4M1.13
    15 March 202217.7M-12.9%14.5M1.22
    28 February 202220.3M+10.2%12.0M1.69
    15 February 202218.5M-1.6%14.2M1.30
    31 January 202218.8M+9.0%21.6M1.00
    14 January 202217.2M-7.5%14.8M1.16
    31 December 202118.6M-6.4%9.8M1.91
    15 December 202119.9M-3.4%14.6M1.36
    30 November 202120.6M+0.5%14.8M1.39
    15 November 202120.5M-18.3%12.1M1.69
    29 October 202125.1M+4.7%16.5M1.52
    15 October 202123.9M+7.8%12.4M1.93
    30 September 202122.2M-2.5%13.6M1.63
    15 September 202122.8M-3.7%13.3M1.71
    31 August 202123.6M+2.6%11.5M2.06
    13 August 202123.0M+0.3%12.8M1.80
    30 July 202123.0M+5.2%14.9M1.55
    15 July 202121.8M+12.2%10.8M2.02
    30 June 202119.5M-12.5%10.0M1.95
    15 June 202122.2M-10.2%9.3M2.38
    28 May 202124.8M-7.5%14.2M1.74
    14 May 202126.8M+15.6%15.0M1.79
    30 April 202123.2M+11.3%13.4M1.73
    15 April 202120.8M-2.7%14.9M1.40
    31 March 202121.4M+10.1%15.5M1.38
    15 March 202119.4M-29.9%16.6M1.17
    26 February 202127.7M+1.8%14.7M1.89
    12 February 202127.2M+45.0%13.6M2.00
    29 January 202118.8M-35.0%15.7M1.20
    15 January 202128.9M+6.5%13.8M2.09
    31 December 202027.1M-18.8%10.6M2.55
    15 December 202033.4M-7.0%13.9M2.41
    30 November 202035.9M-4.2%10.0M3.58
    13 November 202037.5M+2.9%13.6M2.75
    30 October 202036.5M-6.8%13.2M2.76
    15 October 202039.1M-7.0%12.2M3.21
    30 September 202042.1M-4.9%17.2M2.45
    15 September 202044.2M-9.1%21.7M2.04
    31 August 202048.6M+18.7%14.4M3.37
    14 August 202041.0M-2.0%10.9M3.77
    31 July 202041.8M+2.4%14.8M2.82
    15 July 202040.8M+4.7%14.1M2.89
    30 June 202039.0M-10.9%18.7M2.08
    15 June 202043.8M-6.9%17.4M2.52
    29 May 202047.0M+13.1%18.6M2.53
    15 May 202041.6M-1.6%24.5M1.70
    30 April 202042.3M+7.9%20.3M2.08
    15 April 202039.2M+8.8%19.2M2.04
    31 March 202036.0M-6.8%28.9M1.24
    13 March 202038.6M+11.7%22.7M1.70
    28 February 202034.6M-18.6%24.9M1.39
    14 February 202042.4M+3.9%15.9M2.68
    31 January 202040.9M-24.0%17.4M2.35
    15 January 202053.8M+2.0%12.8M4.20
    31 December 201952.7M-14.5%12.1M4.36
    13 December 201961.6M-2.6%12.2M5.06
    29 November 201963.3M+5.8%14.5M4.35
    15 November 201959.8M-6.1%13.6M4.39
    31 October 201963.6M+8.5%21.6M2.95
    15 October 201958.6M-5.2%13.5M4.34
    30 September 201961.9M+2.2%18.1M3.43
    13 September 201960.5M+3.1%19.3M3.14
    30 August 201958.7M-6.3%13.6M4.32
    15 August 201962.7M-11.7%20.0M3.14
    31 July 201971.0M-13.8%18.0M3.93
    15 July 201982.4M+0.9%16.5M4.99
    28 June 201981.7M-2.7%18.7M4.37
    14 June 201983.9M+39.0%19.6M4.27
    31 May 201960.4M-2.3%20.5M2.94
    15 May 201961.8M-10.9%17.6M3.52
    30 April 201969.4M-9.3%21.3M3.26
    15 April 201976.5M+0.0%17.6M4.35
    29 March 201976.5M-12.2%19.1M4.01
    15 March 201987.1M-11.4%26.7M3.26
    28 February 201998.3M-7.1%18.9M5.19
    15 February 2019105.7M-4.5%22.1M4.78
    31 January 2019110.7M+26.7%45.6M2.43
    15 January 201987.4M+1.7%22.4M3.90
    31 December 201885.9M+15.9%27.1M3.17
    14 December 201874.2M+20.2%34.0M2.18
    30 November 201861.7M-19.3%27.1M2.28
    15 November 201876.4M-11.5%28.0M2.73
    31 October 201886.3M-11.3%41.5M2.08
    15 October 201897.3M-15.4%30.2M3.22
    28 September 2018115.1M-20.3%25.5M4.52
    14 September 2018144.4M-10.3%34.2M4.22
    31 August 2018161.0M+0.8%26.2M6.14
    15 August 2018159.7M+22.3%23.5M6.81
    31 July 2018130.6M-1.4%30.7M4.25
    13 July 2018132.5M-1.4%23.5M5.65
    29 June 2018134.4M-6.4%33.6M4.00
    15 June 2018143.5M+5.3%48.2M2.98
    31 May 2018136.3M-2.8%27.0M5.05
    15 May 2018140.2M+17.3%24.9M5.62
    30 April 2018119.5M+26.1%47.4M2.52
    13 April 201894.8M-0.9%29.7M3.20
    29 March 201895.6M-15.6%35.7M2.68
    15 March 2018113.3M+5.0%44.0M2.58
    28 February 2018107.9M+5.8%29.6M3.65
    15 February 2018102.0M-1.8%47.0M2.17
    31 January 2018103.9M-5.5%44.9M2.32
    12 January 2018110.0M-4.0%26.0M4.23
    29 December 2017114.6M21.5M5.33
    Shares in millions (M) or thousands (K); hold the pointer on a figure for the exact count. Counts before a split are restated to today's shares. FINRA publishes consolidated short interest twice a month, about ten days after each settlement.