5991 ニッパツ の時系列データ [1987年度]
| 日付 | 始値 | 高値 | 安値 | 終値 | 出来高 | 調整後終値 |
|---|---|---|---|---|---|---|
| 1987-12-28 | 460 | 460 | 450 | 455 | 91,000 | 455 |
| 1987-12-26 | 463 | 470 | 460 | 460 | 68,000 | 460 |
| 1987-12-25 | 480 | 480 | 463 | 464 | 79,000 | 464 |
| 1987-12-24 | 473 | 475 | 466 | 475 | 146,000 | 475 |
| 1987-12-23 | 470 | 473 | 462 | 470 | 96,000 | 470 |
| 1987-12-22 | 490 | 490 | 473 | 473 | 239,000 | 473 |
| 1987-12-21 | 476 | 485 | 475 | 485 | 95,000 | 485 |
| 1987-12-18 | 485 | 485 | 470 | 471 | 170,000 | 471 |
| 1987-12-17 | 491 | 495 | 486 | 486 | 148,000 | 486 |
| 1987-12-16 | 491 | 500 | 491 | 491 | 140,000 | 491 |
| 1987-12-15 | 498 | 504 | 491 | 492 | 166,000 | 492 |
| 1987-12-14 | 509 | 510 | 496 | 496 | 380,000 | 496 |
| 1987-12-11 | 499 | 518 | 488 | 503 | 1,569,000 | 503 |
| 1987-12-10 | 492 | 510 | 492 | 508 | 1,345,000 | 508 |
| 1987-12-09 | 475 | 493 | 471 | 487 | 651,000 | 487 |
| 1987-12-08 | 465 | 480 | 461 | 466 | 538,000 | 466 |
| 1987-12-07 | 472 | 476 | 465 | 470 | 100,000 | 470 |
| 1987-12-05 | 471 | 476 | 465 | 475 | 342,000 | 475 |
| 1987-12-04 | 460 | 474 | 460 | 468 | 606,000 | 468 |
| 1987-12-03 | 444 | 465 | 444 | 465 | 276,000 | 465 |
| 1987-12-02 | 440 | 446 | 440 | 444 | 226,000 | 444 |
| 1987-12-01 | 437 | 437 | 425 | 435 | 244,000 | 435 |
| 1987-11-30 | 444 | 446 | 440 | 446 | 92,000 | 446 |
| 1987-11-28 | 437 | 450 | 437 | 441 | 153,000 | 441 |
| 1987-11-27 | 444 | 449 | 435 | 435 | 236,000 | 435 |
| 1987-11-26 | 452 | 452 | 440 | 450 | 163,000 | 450 |
| 1987-11-25 | 445 | 450 | 445 | 450 | 95,000 | 450 |
| 1987-11-24 | 445 | 445 | 445 | 445 | 74,000 | 445 |
| 1987-11-20 | 450 | 450 | 444 | 444 | 73,000 | 444 |
| 1987-11-19 | 450 | 460 | 450 | 455 | 59,000 | 455 |
| 1987-11-18 | 447 | 455 | 442 | 455 | 152,000 | 455 |
| 1987-11-17 | 449 | 449 | 441 | 449 | 49,000 | 449 |
| 1987-11-16 | 440 | 440 | 436 | 439 | 132,000 | 439 |
| 1987-11-13 | 440 | 440 | 431 | 435 | 191,000 | 435 |
| 1987-11-12 | 425 | 425 | 420 | 423 | 91,000 | 423 |
| 1987-11-11 | 430 | 435 | 405 | 415 | 135,000 | 415 |
| 1987-11-10 | 445 | 445 | 430 | 430 | 123,000 | 430 |
| 1987-11-09 | 461 | 461 | 448 | 448 | 141,000 | 448 |
| 1987-11-07 | 456 | 457 | 451 | 451 | 49,000 | 451 |
| 1987-11-06 | 464 | 464 | 452 | 454 | 88,000 | 454 |
| 1987-11-05 | 461 | 465 | 453 | 460 | 138,000 | 460 |
| 1987-11-04 | 465 | 470 | 461 | 461 | 162,000 | 461 |
| 1987-11-02 | 460 | 468 | 460 | 468 | 120,000 | 468 |
| 1987-10-31 | 455 | 460 | 454 | 460 | 171,000 | 460 |
| 1987-10-30 | 455 | 460 | 452 | 452 | 201,000 | 452 |
| 1987-10-29 | 450 | 460 | 450 | 451 | 55,000 | 451 |
| 1987-10-28 | 463 | 463 | 453 | 456 | 172,000 | 456 |
| 1987-10-27 | 439 | 460 | 437 | 443 | 290,000 | 443 |
| 1987-10-26 | 471 | 475 | 435 | 449 | 263,000 | 449 |
| 1987-10-24 | 474 | 479 | 474 | 475 | 196,000 | 475 |
| 1987-10-23 | 481 | 490 | 475 | 479 | 306,000 | 479 |
| 1987-10-22 | 505 | 509 | 495 | 495 | 507,000 | 495 |
| 1987-10-21 | 484 | 490 | 480 | 490 | 316,000 | 490 |
| 1987-10-19 | 529 | 529 | 513 | 519 | 232,000 | 519 |
| 1987-10-16 | 533 | 539 | 529 | 539 | 318,000 | 539 |
| 1987-10-15 | 531 | 544 | 531 | 532 | 360,000 | 532 |
| 1987-10-14 | 550 | 553 | 545 | 550 | 516,000 | 550 |
| 1987-10-13 | 545 | 548 | 543 | 543 | 196,000 | 543 |
| 1987-10-12 | 545 | 548 | 540 | 548 | 293,000 | 548 |
| 1987-10-09 | 559 | 570 | 550 | 550 | 1,556,000 | 550 |
| 1987-10-08 | 549 | 565 | 544 | 555 | 4,367,000 | 555 |
| 1987-10-07 | 536 | 550 | 529 | 550 | 1,868,000 | 550 |
| 1987-10-06 | 533 | 536 | 528 | 536 | 778,000 | 536 |
| 1987-10-05 | 537 | 539 | 528 | 534 | 614,000 | 534 |
| 1987-10-03 | 530 | 533 | 525 | 533 | 749,000 | 533 |
| 1987-10-02 | 510 | 527 | 510 | 520 | 948,000 | 520 |
| 1987-10-01 | 505 | 510 | 501 | 507 | 1,046,000 | 507 |
| 1987-09-30 | 501 | 501 | 496 | 501 | 551,000 | 501 |
| 1987-09-29 | 501 | 503 | 500 | 503 | 463,000 | 503 |
| 1987-09-28 | 510 | 510 | 501 | 501 | 225,000 | 501 |
| 1987-09-26 | 510 | 510 | 510 | 510 | 110,000 | 510 |
| 1987-09-25 | 496 | 496 | 486 | 491 | 269,000 | 491 |
| 1987-09-24 | 500 | 501 | 495 | 496 | 283,000 | 496 |
| 1987-09-22 | 503 | 505 | 500 | 502 | 157,000 | 502 |
| 1987-09-21 | 506 | 510 | 503 | 503 | 185,000 | 503 |
| 1987-09-18 | 510 | 510 | 503 | 505 | 184,000 | 505 |
| 1987-09-17 | 509 | 510 | 502 | 510 | 183,000 | 510 |
| 1987-09-16 | 515 | 515 | 500 | 510 | 305,000 | 510 |
| 1987-09-14 | 515 | 516 | 509 | 511 | 173,000 | 511 |
| 1987-09-11 | 510 | 513 | 509 | 509 | 194,000 | 509 |
| 1987-09-10 | 508 | 508 | 500 | 508 | 184,000 | 508 |
| 1987-09-09 | 510 | 513 | 507 | 509 | 155,000 | 509 |
| 1987-09-08 | 519 | 519 | 506 | 510 | 435,000 | 510 |
| 1987-09-07 | 520 | 524 | 510 | 511 | 312,000 | 511 |
| 1987-09-05 | 527 | 527 | 520 | 520 | 308,000 | 520 |
| 1987-09-04 | 524 | 528 | 519 | 528 | 721,000 | 528 |
| 1987-09-03 | 509 | 525 | 509 | 519 | 820,000 | 519 |
| 1987-09-02 | 530 | 540 | 523 | 529 | 2,592,000 | 529 |
| 1987-09-01 | 509 | 520 | 505 | 520 | 864,000 | 520 |
| 1987-08-31 | 513 | 513 | 502 | 504 | 716,000 | 504 |
| 1987-08-29 | 502 | 515 | 500 | 514 | 1,166,000 | 514 |
| 1987-08-28 | 498 | 503 | 497 | 502 | 1,292,000 | 502 |
| 1987-08-27 | 491 | 498 | 490 | 496 | 507,000 | 496 |
| 1987-08-26 | 489 | 490 | 485 | 490 | 186,000 | 490 |
| 1987-08-25 | 489 | 490 | 486 | 487 | 146,000 | 487 |
| 1987-08-24 | 481 | 490 | 480 | 489 | 278,000 | 489 |
| 1987-08-22 | 480 | 485 | 480 | 480 | 51,000 | 480 |
| 1987-08-21 | 487 | 489 | 480 | 480 | 124,000 | 480 |
| 1987-08-20 | 485 | 485 | 475 | 485 | 60,000 | 485 |
| 1987-08-19 | 494 | 494 | 481 | 488 | 128,000 | 488 |
| 1987-08-18 | 495 | 495 | 490 | 490 | 233,000 | 490 |
| 1987-08-17 | 495 | 495 | 488 | 493 | 91,000 | 493 |
| 1987-08-14 | 495 | 495 | 490 | 490 | 327,000 | 490 |
| 1987-08-13 | 490 | 490 | 476 | 476 | 251,000 | 476 |
| 1987-08-12 | 492 | 495 | 488 | 488 | 249,000 | 488 |
| 1987-08-11 | 497 | 497 | 486 | 492 | 394,000 | 492 |
| 1987-08-10 | 489 | 491 | 484 | 490 | 253,000 | 490 |
| 1987-08-07 | 481 | 482 | 475 | 480 | 83,000 | 480 |
| 1987-08-06 | 480 | 485 | 475 | 485 | 238,000 | 485 |
| 1987-08-05 | 479 | 484 | 476 | 480 | 176,000 | 480 |
| 1987-08-04 | 465 | 477 | 462 | 475 | 129,000 | 475 |
| 1987-08-03 | 480 | 480 | 457 | 460 | 267,000 | 460 |
| 1987-08-01 | 470 | 470 | 466 | 470 | 81,000 | 470 |
| 1987-07-31 | 470 | 478 | 470 | 470 | 103,000 | 470 |
| 1987-07-30 | 481 | 481 | 475 | 478 | 66,000 | 478 |
| 1987-07-29 | 463 | 469 | 463 | 466 | 245,000 | 466 |
| 1987-07-28 | 460 | 460 | 456 | 460 | 204,000 | 460 |
| 1987-07-27 | 460 | 460 | 456 | 456 | 27,000 | 456 |
| 1987-07-25 | 460 | 460 | 456 | 460 | 56,000 | 460 |
| 1987-07-24 | 457 | 464 | 453 | 459 | 217,000 | 459 |
| 1987-07-23 | 450 | 460 | 450 | 452 | 186,000 | 452 |
| 1987-07-22 | 460 | 465 | 458 | 458 | 166,000 | 458 |
| 1987-07-21 | 468 | 468 | 457 | 465 | 173,000 | 465 |
| 1987-07-20 | 475 | 480 | 470 | 470 | 156,000 | 470 |
| 1987-07-17 | 482 | 482 | 473 | 475 | 135,000 | 475 |
| 1987-07-16 | 480 | 480 | 475 | 480 | 88,000 | 480 |
| 1987-07-15 | 484 | 484 | 475 | 475 | 121,000 | 475 |
| 1987-07-14 | 476 | 480 | 475 | 480 | 49,000 | 480 |
| 1987-07-13 | 471 | 484 | 471 | 471 | 130,000 | 471 |
| 1987-07-10 | 476 | 479 | 467 | 467 | 220,000 | 467 |
| 1987-07-09 | 466 | 471 | 466 | 471 | 117,000 | 471 |
| 1987-07-08 | 484 | 485 | 465 | 465 | 139,000 | 465 |
| 1987-07-07 | 475 | 484 | 470 | 470 | 235,000 | 470 |
| 1987-07-06 | 489 | 489 | 480 | 480 | 143,000 | 480 |
| 1987-07-04 | 490 | 495 | 488 | 494 | 232,000 | 494 |
| 1987-07-03 | 500 | 503 | 492 | 495 | 527,000 | 495 |
| 1987-07-02 | 496 | 500 | 490 | 495 | 493,000 | 495 |
| 1987-07-01 | 490 | 490 | 481 | 481 | 115,000 | 481 |
| 1987-06-30 | 488 | 502 | 480 | 495 | 616,000 | 495 |
| 1987-06-29 | 506 | 510 | 490 | 492 | 1,110,000 | 492 |
| 1987-06-27 | 498 | 507 | 490 | 505 | 1,026,000 | 505 |
| 1987-06-26 | 485 | 495 | 485 | 495 | 370,000 | 495 |
| 1987-06-25 | 475 | 484 | 475 | 484 | 200,000 | 484 |
| 1987-06-24 | 480 | 484 | 475 | 479 | 228,000 | 479 |
| 1987-06-23 | 470 | 484 | 470 | 480 | 194,000 | 480 |
| 1987-06-22 | 485 | 490 | 480 | 480 | 144,000 | 480 |
| 1987-06-19 | 499 | 499 | 485 | 490 | 533,000 | 490 |
| 1987-06-18 | 497 | 497 | 483 | 485 | 289,000 | 485 |
| 1987-06-17 | 494 | 497 | 491 | 497 | 475,000 | 497 |
| 1987-06-16 | 495 | 496 | 488 | 489 | 316,000 | 489 |
| 1987-06-15 | 490 | 495 | 489 | 492 | 309,000 | 492 |
| 1987-06-12 | 500 | 500 | 488 | 489 | 728,000 | 489 |
| 1987-06-11 | 499 | 499 | 491 | 492 | 540,000 | 492 |
| 1987-06-10 | 490 | 508 | 489 | 500 | 1,923,000 | 500 |
| 1987-06-09 | 483 | 489 | 482 | 486 | 385,000 | 486 |
| 1987-06-08 | 490 | 490 | 481 | 483 | 224,000 | 483 |
| 1987-06-06 | 481 | 485 | 476 | 480 | 364,000 | 480 |
| 1987-06-05 | 485 | 493 | 476 | 476 | 851,000 | 476 |
| 1987-06-04 | 488 | 497 | 475 | 480 | 2,007,000 | 480 |
| 1987-06-03 | 470 | 490 | 470 | 490 | 884,000 | 490 |
| 1987-06-02 | 495 | 495 | 471 | 471 | 1,287,000 | 471 |
| 1987-06-01 | 469 | 496 | 465 | 490 | 1,904,000 | 490 |
| 1987-05-30 | 469 | 469 | 461 | 469 | 340,000 | 469 |
| 1987-05-29 | 460 | 469 | 458 | 469 | 691,000 | 469 |
| 1987-05-28 | 467 | 467 | 456 | 459 | 346,000 | 459 |
| 1987-05-27 | 465 | 469 | 460 | 464 | 854,000 | 464 |
| 1987-05-26 | 460 | 465 | 460 | 461 | 225,000 | 461 |
| 1987-05-25 | 465 | 470 | 457 | 460 | 204,000 | 460 |
| 1987-05-23 | 460 | 465 | 455 | 455 | 191,000 | 455 |
| 1987-05-22 | 458 | 465 | 456 | 465 | 259,000 | 465 |
| 1987-05-21 | 452 | 461 | 452 | 453 | 302,000 | 453 |
| 1987-05-20 | 460 | 460 | 451 | 456 | 435,000 | 456 |
| 1987-05-19 | 463 | 464 | 460 | 463 | 199,000 | 463 |
| 1987-05-18 | 461 | 467 | 460 | 465 | 258,000 | 465 |
| 1987-05-15 | 467 | 470 | 455 | 468 | 858,000 | 468 |
| 1987-05-14 | 465 | 480 | 465 | 472 | 1,655,000 | 472 |
| 1987-05-13 | 470 | 473 | 460 | 463 | 1,529,000 | 463 |
| 1987-05-12 | 463 | 477 | 460 | 470 | 2,668,000 | 470 |
| 1987-05-11 | 449 | 453 | 448 | 453 | 509,000 | 453 |
| 1987-05-08 | 439 | 449 | 435 | 448 | 494,000 | 448 |
| 1987-05-07 | 436 | 444 | 435 | 444 | 453,000 | 444 |
| 1987-05-06 | 438 | 438 | 432 | 434 | 233,000 | 434 |
| 1987-05-02 | 442 | 442 | 431 | 431 | 401,000 | 431 |
| 1987-05-01 | 435 | 441 | 434 | 441 | 676,000 | 441 |
| 1987-04-30 | 430 | 434 | 425 | 430 | 706,000 | 430 |
| 1987-04-28 | 420 | 425 | 419 | 425 | 438,000 | 425 |
| 1987-04-27 | 420 | 420 | 418 | 420 | 271,000 | 420 |
| 1987-04-25 | 419 | 420 | 415 | 418 | 182,000 | 418 |
| 1987-04-24 | 420 | 421 | 413 | 417 | 421,000 | 417 |
| 1987-04-23 | 413 | 416 | 413 | 415 | 366,000 | 415 |
| 1987-04-22 | 415 | 415 | 411 | 412 | 243,000 | 412 |
| 1987-04-21 | 415 | 416 | 413 | 415 | 267,000 | 415 |
| 1987-04-20 | 415 | 420 | 415 | 415 | 144,000 | 415 |
| 1987-04-17 | 415 | 420 | 415 | 420 | 176,000 | 420 |
| 1987-04-16 | 411 | 414 | 411 | 413 | 154,000 | 413 |
| 1987-04-15 | 413 | 413 | 410 | 411 | 258,000 | 411 |
| 1987-04-14 | 414 | 415 | 412 | 415 | 121,000 | 415 |
| 1987-04-13 | 417 | 420 | 417 | 418 | 69,000 | 418 |
| 1987-04-10 | 419 | 422 | 419 | 419 | 184,000 | 419 |
| 1987-04-09 | 420 | 425 | 417 | 418 | 101,000 | 418 |
| 1987-04-08 | 429 | 429 | 423 | 429 | 254,000 | 429 |
| 1987-04-07 | 425 | 430 | 423 | 423 | 140,000 | 423 |
| 1987-04-06 | 420 | 438 | 417 | 438 | 200,000 | 438 |
| 1987-04-04 | 419 | 420 | 416 | 420 | 83,000 | 420 |
| 1987-04-03 | 427 | 427 | 415 | 416 | 239,000 | 416 |
| 1987-04-02 | 402 | 437 | 400 | 437 | 215,000 | 437 |
| 1987-04-01 | 390 | 404 | 390 | 401 | 52,000 | 401 |
| 1987-03-31 | 403 | 403 | 394 | 394 | 92,000 | 394 |
| 1987-03-30 | 400 | 402 | 400 | 401 | 85,000 | 401 |
| 1987-03-28 | 415 | 415 | 402 | 402 | 105,000 | 402 |
| 1987-03-27 | 418 | 420 | 418 | 420 | 139,000 | 420 |
| 1987-03-26 | 437 | 440 | 430 | 430 | 355,000 | 430 |
| 1987-03-25 | 428 | 440 | 425 | 436 | 423,000 | 436 |
| 1987-03-24 | 425 | 430 | 421 | 428 | 689,000 | 428 |
| 1987-03-23 | 409 | 423 | 408 | 420 | 289,000 | 420 |
| 1987-03-20 | 407 | 410 | 407 | 408 | 251,000 | 408 |
| 1987-03-19 | 410 | 410 | 406 | 406 | 197,000 | 406 |
| 1987-03-18 | 410 | 414 | 410 | 410 | 295,000 | 410 |
| 1987-03-17 | 411 | 420 | 410 | 410 | 242,000 | 410 |
| 1987-03-16 | 415 | 415 | 408 | 413 | 360,000 | 413 |
| 1987-03-13 | 395 | 405 | 395 | 405 | 410,000 | 405 |
| 1987-03-12 | 383 | 393 | 383 | 391 | 113,000 | 391 |
| 1987-03-11 | 383 | 390 | 383 | 385 | 153,000 | 385 |
| 1987-03-10 | 383 | 383 | 381 | 383 | 106,000 | 383 |
| 1987-03-09 | 380 | 383 | 378 | 381 | 240,000 | 381 |
| 1987-03-07 | 380 | 383 | 380 | 380 | 234,000 | 380 |
| 1987-03-06 | 381 | 385 | 380 | 381 | 218,000 | 381 |
| 1987-03-05 | 385 | 385 | 385 | 385 | 228,000 | 385 |
| 1987-03-04 | 385 | 395 | 385 | 385 | 107,000 | 385 |
| 1987-03-03 | 382 | 386 | 382 | 385 | 103,000 | 385 |
| 1987-03-02 | 381 | 382 | 381 | 382 | 163,000 | 382 |
| 1987-02-28 | 382 | 385 | 380 | 381 | 117,000 | 381 |
| 1987-02-27 | 386 | 386 | 382 | 384 | 207,000 | 384 |
| 1987-02-26 | 385 | 390 | 384 | 386 | 265,000 | 386 |
| 1987-02-25 | 390 | 392 | 386 | 386 | 204,000 | 386 |
| 1987-02-24 | 390 | 395 | 389 | 393 | 137,000 | 393 |
| 1987-02-23 | 392 | 395 | 390 | 395 | 125,000 | 395 |
| 1987-02-20 | 395 | 400 | 386 | 387 | 167,000 | 387 |
| 1987-02-19 | 395 | 396 | 392 | 395 | 145,000 | 395 |
| 1987-02-18 | 400 | 400 | 390 | 391 | 238,000 | 391 |
| 1987-02-17 | 385 | 390 | 383 | 390 | 284,000 | 390 |
| 1987-02-16 | 387 | 390 | 383 | 386 | 155,000 | 386 |
| 1987-02-13 | 385 | 385 | 384 | 384 | 109,000 | 384 |
| 1987-02-12 | 388 | 390 | 383 | 385 | 225,000 | 385 |
| 1987-02-10 | 386 | 390 | 385 | 388 | 97,000 | 388 |
| 1987-02-09 | 387 | 390 | 386 | 388 | 30,000 | 388 |
| 1987-02-07 | 386 | 386 | 385 | 386 | 62,000 | 386 |
| 1987-02-06 | 395 | 395 | 385 | 388 | 136,000 | 388 |
| 1987-02-05 | 385 | 390 | 385 | 390 | 165,000 | 390 |
| 1987-02-04 | 385 | 389 | 385 | 385 | 103,000 | 385 |
| 1987-02-03 | 386 | 393 | 385 | 390 | 58,000 | 390 |
| 1987-02-02 | 385 | 390 | 383 | 383 | 59,000 | 383 |
| 1987-01-31 | 381 | 389 | 381 | 383 | 192,000 | 383 |
| 1987-01-30 | 386 | 390 | 386 | 387 | 62,000 | 387 |
| 1987-01-29 | 390 | 390 | 385 | 385 | 101,000 | 385 |
| 1987-01-28 | 390 | 395 | 388 | 390 | 92,000 | 390 |
| 1987-01-27 | 402 | 402 | 392 | 395 | 168,000 | 395 |
| 1987-01-26 | 406 | 410 | 403 | 403 | 120,000 | 403 |
| 1987-01-24 | 393 | 400 | 392 | 400 | 178,000 | 400 |
| 1987-01-23 | 390 | 400 | 389 | 391 | 400,000 | 391 |
| 1987-01-22 | 370 | 380 | 369 | 370 | 680,000 | 370 |
| 1987-01-21 | 370 | 372 | 366 | 366 | 405,000 | 366 |
| 1987-01-20 | 375 | 380 | 370 | 370 | 345,000 | 370 |
| 1987-01-19 | 381 | 386 | 370 | 370 | 412,000 | 370 |
| 1987-01-16 | 394 | 395 | 380 | 380 | 279,000 | 380 |
| 1987-01-14 | 387 | 395 | 387 | 394 | 91,000 | 394 |
| 1987-01-13 | 388 | 390 | 387 | 387 | 52,000 | 387 |
| 1987-01-12 | 390 | 395 | 388 | 389 | 92,000 | 389 |
| 1987-01-09 | 392 | 395 | 386 | 390 | 337,000 | 390 |
| 1987-01-08 | 397 | 397 | 387 | 387 | 246,000 | 387 |
| 1987-01-07 | 395 | 400 | 391 | 397 | 98,000 | 397 |
| 1987-01-06 | 390 | 395 | 390 | 395 | 315,000 | 395 |
| 1987-01-05 | 390 | 390 | 385 | 385 | 78,000 | 385 |
分割・併合履歴 ： [1986-03-27]1株→1.15株