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IndexArb Values vs. Time
S&P 500 SEP 2026 Futures Contract
[Index Arbitrage Program Trading Premium Values from 04-13-2026 to the Last Trade Date of 09-17-2026.]
Updated: Saturday, Apr-11-2026
6:20pm ET

S&P 500 SEP 2026 Arb Values to Contract End

 
Data Table for the Above Graph
[Note that the following values change daily].

 Date
 (Trading  days only)
Number
of Days
to End
Sell
Active

(SA)
Sell
Threshold

(ST)
Fair Value
Premium

(FV)
Buy
Threshold

(BT)
Buy
Active

(BA)
04-13-2026158 67.55 77.51 90.82 101.67 109.78 
04-14-2026157 67.13 77.03 90.25 101.03 109.10 
04-15-2026156 67.08 76.92 90.06 100.78 108.79 
04-16-2026155 66.49 76.26 89.32 99.97 107.93 
04-17-2026154 65.85 75.56 88.53 99.10 107.02 
04-20-2026151 64.04 73.56 86.28 96.64 104.40 
04-21-2026150 63.41 72.86 85.50 95.79 103.49 
04-22-2026149 62.87 72.26 84.81 95.04 102.69 
04-23-2026148 62.31 71.64 84.10 94.26 101.86 
04-24-2026147 61.96 71.22 83.59 93.68 101.23 
04-27-2026144 60.15 69.22 81.34 91.22 98.61 
04-28-2026143 59.52 68.53 80.56 90.37 97.71 
04-29-2026142 58.87 67.81 79.76 89.49 96.78 
04-30-2026141 58.74 67.61 79.48 89.14 96.38 
05-01-2026140 58.32 67.14 78.91 88.51 95.69 
05-04-2026137 56.52 65.14 76.66 86.05 93.08 
05-05-2026136 55.90 64.45 75.89 85.21 92.19 
05-06-2026135 55.50 63.99 75.34 84.59 91.51 
05-07-2026134 54.88 63.31 74.58 83.76 90.63 
05-08-2026133 55.12 63.49 74.67 83.78 90.60 
05-11-2026130 53.81 61.99 72.91 81.82 88.48 
05-12-2026129 53.22 61.33 72.17 81.01 87.62 
05-13-2026128 53.33 61.38 72.14 80.90 87.46 
05-14-2026127 52.84 60.82 71.49 80.19 86.69 
05-15-2026126 53.31 61.23 71.81 80.44 86.89 
05-18-2026123 51.76 59.49 69.82 78.24 84.54 
05-19-2026122 51.55 59.22 69.46 77.81 84.06 
05-20-2026121 51.19 58.79 68.95 77.23 83.43 
05-21-2026120 51.42 58.96 69.03 77.24 83.39 
05-22-2026119 51.16 58.63 68.62 76.76 82.85 
05-26-2026115 49.07 56.29 65.94 73.80 79.68 
05-27-2026114 48.42 55.58 65.14 72.94 78.77 
05-28-2026113 47.79 54.89 64.36 72.09 77.87 
05-29-2026112 47.59 54.62 64.01 71.67 77.40 
06-01-2026109 46.44 53.28 62.42 69.87 75.44 
06-02-2026108 45.91 52.69 61.74 69.12 74.64 
06-03-2026107 45.37 52.08 61.05 68.36 73.83 
06-04-2026106 45.23 51.88 60.76 68.00 73.42 
06-05-2026105 45.40 51.99 60.79 67.96 73.33 
06-08-2026102 43.55 49.95 58.50 65.46 70.67 
06-09-2026101 43.16 49.49 57.95 64.85 70.01 
06-10-2026100 43.00 49.27 57.65 64.47 69.58 
06-11-202699 42.34 48.55 56.84 63.60 68.66 
06-12-202698 41.87 48.01 56.22 62.91 67.91 
06-15-202695 41.71 47.66 55.62 62.10 66.95 
06-16-202694 41.32 47.21 55.08 61.50 66.29 
06-17-202693 40.76 46.59 54.37 60.72 65.47 
06-18-202692 40.20 45.96 53.66 59.94 64.63 
06-22-202688 38.32 43.83 51.19 57.20 61.68 
06-23-202687 37.82 43.27 50.54 56.48 60.91 
06-24-202686 37.18 42.56 49.75 55.62 60.00 
06-25-202685 36.54 41.86 48.97 54.77 59.10 
06-26-202684 36.06 41.31 48.34 54.06 58.35 
06-29-202681 34.13 39.19 45.96 51.48 55.61 
06-30-202680 34.03 39.03 45.72 51.17 55.25 
07-01-202679 33.76 38.70 45.30 50.69 54.71 
07-02-202678 33.39 38.26 44.78 50.10 54.07 
07-06-202674 31.53 36.16 42.34 47.38 51.15 
07-07-202673 30.98 35.54 41.64 46.61 50.33 
07-08-202672 30.32 34.82 40.83 45.73 49.40 
07-09-202671 29.80 34.24 40.17 45.00 48.61 
07-10-202670 29.85 34.23 40.07 44.84 48.40 
07-13-202667 27.90 32.08 37.67 42.23 45.64 
07-14-202666 27.24 31.36 36.87 41.36 44.72 
07-15-202665 27.25 31.32 36.75 41.18 44.50 
07-16-202664 26.71 30.71 36.06 40.44 43.72 
07-17-202663 26.26 30.20 35.47 39.80 43.04 
07-20-202660 24.36 28.13 33.16 37.33 40.45 
07-21-202659 23.73 27.43 32.38 36.50 39.57 
07-22-202658 23.18 26.82 31.69 35.76 38.79 
07-23-202657 22.57 26.15 30.95 34.95 37.95 
07-24-202656 22.31 25.83 30.55 34.50 37.46 
07-27-202653 20.39 23.73 28.21 32.00 34.83 
07-28-202652 19.72 23.01 27.41 31.14 33.93 
07-29-202651 19.05 22.28 26.61 30.28 33.03 
07-30-202650 18.40 21.57 25.82 29.44 32.15 
07-31-202649 18.71 21.83 25.99 29.56 32.23 
08-03-202646 17.00 19.95 23.88 27.28 29.82 
08-04-202645 16.40 19.28 23.14 26.48 28.98 
08-05-202644 15.82 18.64 22.43 25.71 28.17 
08-06-202643 15.23 18.00 21.71 24.94 27.35 
08-07-202642 14.91 17.62 21.25 24.42 26.79 
08-10-202639 13.86 16.40 19.80 22.80 25.04 
08-11-202638 13.21 15.69 19.02 21.96 24.16 
08-12-202637 12.57 15.00 18.25 21.13 23.29 
08-13-202636 12.56 14.94 18.11 20.94 23.05 
08-14-202635 13.05 15.37 18.47 21.24 23.31 
08-17-202632 11.56 13.71 16.59 19.18 21.12 
08-18-202631 10.99 13.08 15.89 18.42 20.31 
08-19-202630 11.07 13.11 15.84 18.31 20.16 
08-20-202629 11.20 13.18 15.84 18.25 20.05 
08-21-202628 10.83 12.75 15.33 17.69 19.45 
08-24-202625 8.59 10.36 12.72 14.89 16.51 
08-25-202624 8.29 10.00 12.29 14.40 15.98 
08-26-202623 7.58 9.24 11.45 13.50 15.04 
08-27-202622 6.89 8.49 10.64 12.63 14.11 
08-28-202621 6.37 7.91 9.98 11.91 13.36 
08-31-202618 4.87 6.26 8.11 9.86 11.16 
09-01-202617 4.61 5.94 7.72 9.41 10.66 
09-02-202616 4.02 5.30 7.01 8.63 9.84 
09-03-202615 3.76 4.98 6.62 8.18 9.35 
09-04-202614 4.18 5.35 6.92 8.41 9.53 
09-08-202610 1.75 2.71 4.00 5.24 6.17 
09-09-20261.61 2.52 3.73 4.92 5.80 
09-10-20261.22 2.07 3.22 4.34 5.17 
09-11-20260.83 1.63 2.71 3.77 4.55 
09-14-2026-0.53 0.12 0.99 1.85 2.49 
09-15-20260.25 0.84 1.65 2.44 3.03 
09-16-2026-0.22 0.32 1.06 1.79 2.32 
09-17-2026-0.60 -0.12 0.55 1.22 1.70 

 

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