ALEXION PHARMACEUTICALS INC

CUSIP: 015351109 Class: COM

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

Note: Option positions (PUT/CALL) are excluded.

Q2 2021
Shares 410,569 Value ($000) $75,426 Avg Close — Range —
Q1 2021
Shares 425,949 Value ($000) $65,132 Avg Close — Range —
Q4 2020
Shares 432,880 Value ($000) $67,633 Avg Close — Range —
Q3 2020
Shares 441,186 Value ($000) $50,485 Avg Close — Range —
Q2 2020
Shares 393,938 Value ($000) $44,216 Avg Close — Range —
Q1 2020
Shares 386,466 Value ($000) $34,701 Avg Close — Range —
Q4 2019
Shares 402,386 Value ($000) $43,518 Avg Close — Range —
Q3 2019
Shares 389,638 Value ($000) $38,161 Avg Close — Range —
Q2 2019
Shares 358,164 Value ($000) $46,912 Avg Close — Range —
Q1 2019
Shares 353,711 Value ($000) $47,815 Avg Close — Range —
Q4 2018
Shares 353,012 Value ($000) $34,369 Avg Close — Range —
Q3 2018
Shares 347,982 Value ($000) $48,373 Avg Close — Range —
Q2 2018
Shares 347,908 Value ($000) $43,193 Avg Close — Range —
Q1 2018
Shares 347,218 Value ($000) $38,701 Avg Close — Range —
Q4 2017
Shares 363,350 Value ($000) $43,453 Avg Close — Range —
Q3 2017
Shares 367,615 Value ($000) $51,573 Avg Close — Range —
Q2 2017
Shares 404,755 Value ($000) $49,246 Avg Close — Range —
Q1 2017
Shares 432,224 Value ($000) $52,403 Avg Close — Range —
Q4 2016
Shares 452,124 Value ($000) $55,317 Avg Close — Range —
Q3 2016
Shares 464,224 Value ($000) $56,886 Avg Close — Range —
Q2 2016
Shares 460,324 Value ($000) $53,747 Avg Close — Range —
Q1 2016
Shares 458,378 Value ($000) $63,815 Avg Close — Range —
Q4 2015
Shares 399,894 Value ($000) $76,280 Avg Close — Range —
Q3 2015
Shares 393,478 Value ($000) $61,536 Avg Close — Range —
Q2 2015
Shares 394,078 Value ($000) $71,237 Avg Close — Range —
Q1 2015
Shares 362,464 Value ($000) $62,815 Avg Close — Range —
Q4 2014
Shares 368,664 Value ($000) $68,214 Avg Close — Range —
Q3 2014
Shares 365,203 Value ($000) $60,558 Avg Close — Range —
Q2 2014
Shares 369,330 Value ($000) $57,708 Avg Close — Range —
Q1 2014
Shares 355,030 Value ($000) $54,011 Avg Close — Range —
Q4 2013
Shares 353,330 Value ($000) $47,014 Avg Close — Range —
Q3 2013
Shares 350,930 Value ($000) $40,764 Avg Close — Range —
Q2 2013
Shares 340,059 Value ($000) $31,367 Avg Close — Range —
Q1 2013
Shares 333,908 Value ($000) $30,766 Avg Close — Range —