| Date | Currency | Open | High | Low | Close | A.Close | Day Change | Volume |
|---|---|---|---|---|---|---|---|---|
| 8 May 1981 | USD | 17.25 | 17.75 | 17.25 | 17.25 | 57.5 | +0.5 (+2.99%) | 2,600 |
| 7 May 1981 | USD | 16.75 | 17.5 | 16.75 | 16.75 | 55.8333 | +0.25 (+1.52%) | 2,200 |
| 6 May 1981 | USD | 16.5 | 17.25 | 16.5 | 16.5 | 55 | 0.0 (0.0%) | 1,400 |
| 5 May 1981 | USD | 16.5 | 17.25 | 16.5 | 16.5 | 55 | +0.25 (+1.54%) | 1,500 |
| 4 May 1981 | USD | 16.25 | 16.25 | 16.25 | 16.25 | 54.1667 | 0.0 (0.0%) | 0 |
| 1 May 1981 | USD | 16.25 | 17 | 16.25 | 16.25 | 54.1667 | -1.25 (-7.14%) | 3,500 |
| 30 Apr 1981 | USD | 17.5 | 17.75 | 17.5 | 17.5 | 58.3333 | -0.25 (-1.41%) | 3,900 |
| 29 Apr 1981 | USD | 17.75 | 18.25 | 17.75 | 17.75 | 59.1667 | 0.0 (0.0%) | 200 |
| 28 Apr 1981 | USD | 17.75 | 18 | 17.75 | 17.75 | 59.1667 | +0.25 (+1.43%) | 2,300 |
| 27 Apr 1981 | USD | 17.5 | 18.25 | 17.5 | 17.5 | 58.3333 | -0.25 (-1.41%) | 1,700 |
| 24 Apr 1981 | USD | 17.75 | 18.5 | 17.75 | 17.75 | 59.1667 | -0.25 (-1.39%) | 5,200 |
| 23 Apr 1981 | USD | 18 | 18.5 | 18 | 18 | 60 | +0.25 (+1.41%) | 2,300 |
| 22 Apr 1981 | USD | 17.75 | 18.25 | 17.75 | 17.75 | 59.1667 | +0.25 (+1.43%) | 500 |
| 21 Apr 1981 | USD | 17.5 | 18 | 17.5 | 17.5 | 58.3333 | -0.5 (-2.78%) | 4,300 |
| 20 Apr 1981 | USD | 18 | 18.75 | 18 | 18 | 60 | 0.0 (0.0%) | 8,900 |
| 17 Apr 1981 | USD | 18 | 18 | 18 | 18 | 60 | 0.0 (0.0%) | 0 |
| 16 Apr 1981 | USD | 18 | 18.75 | 18 | 18 | 60 | +2.75 (+18.03%) | 9,400 |
| 15 Apr 1981 | USD | 15.25 | 15.75 | 15.25 | 15.25 | 50.8333 | +0.75 (+5.17%) | 5,400 |
| 14 Apr 1981 | USD | 14.5 | 15.25 | 14.5 | 14.5 | 48.3333 | -0.25 (-1.69%) | 2,000 |
| 13 Apr 1981 | USD | 14.75 | 15.25 | 14.75 | 14.75 | 49.1667 | +0.25 (+1.72%) | 2,800 |
| 10 Apr 1981 | USD | 14.5 | 15 | 14.5 | 14.5 | 48.3333 | +0.75 (+5.45%) | 6,200 |
| 9 Apr 1981 | USD | 13.75 | 14.25 | 13.75 | 13.75 | 45.8333 | +1.5 (+12.24%) | 7,400 |
| 8 Apr 1981 | USD | 12.25 | 13 | 12.25 | 12.25 | 40.8333 | +0.25 (+2.08%) | 2,500 |
| 7 Apr 1981 | USD | 12 | 12.5 | 12 | 12 | 40 | +0.5 (+4.35%) | 4,900 |
| 6 Apr 1981 | USD | 11.5 | 12.25 | 11.5 | 11.5 | 38.3333 | -0.25 (-2.13%) | 3,300 |
| 3 Apr 1981 | USD | 11.75 | 12.25 | 11.75 | 11.75 | 39.1667 | +1.25 (+11.90%) | 3,800 |
| 2 Apr 1981 | USD | 10.5 | 11 | 10.5 | 10.5 | 35 | +0.5 (+5%) | 1,000 |
| 1 Apr 1981 | USD | 10 | 10.5 | 10 | 10 | 33.3333 | 0.0 (0.0%) | 300 |
| 31 Mar 1981 | USD | 10 | 10.5 | 10 | 10 | 33.3333 | -0.5 (-4.76%) | 200 |
| 30 Mar 1981 | USD | 10.5 | 11.25 | 10.5 | 10.5 | 35 | -0.75 (-6.67%) | 2,500 |
