ALDR (ALDR) has the following price history information. Looking back at ALDR historical stock prices for the last five trading days, on October 16, 2019, ALDR opened at $18.87, traded as high as $18.95 and as low as $18.86, and closed at $18.87. Trading volume was a total of 5.23M shares. On October 17, 2019, ALDR opened at $18.88, traded as high as $18.91 and as low as $18.86, and closed at $18.90. Trading volume was a total of 5.86M shares. On October 18, 2019, ALDR opened at $18.88, traded as high as $18.97 and as low as $18.87, and closed at $18.92. Trading volume was a total of 7.36M shares. On October 21, 2019, ALDR opened at $18.95, traded as high as $19.12 and as low as $18.82, and closed at $18.88. Trading volume was a total of 29.06M shares. On October 22, 2019, ALDR opened at $18.88, traded as high as $18.88 and as low as $18.88, and closed at $18.88. Trading volume was a total of 0 shares.

ALDR Historical Stock Prices By Date:

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 20142015201620172018201920202021202220232024

Below, we examine the compound annual growth rate — CAGR for short — of an investment into ALDR shares, starting with a $10,000 purchase of ALDR, and working forward through the historical stock price information to today.

Growth of $10,000.00 Without Dividends Reinvested
Start date:	05/09/2014
End date:	10/22/2019
Start price/share:	$10.00
End price/share:	$18.88
Dividends collected/share:	$0.00
Total return:	88.80%
Average Annual Total Return:	12.35%
Starting investment:	$10,000.00
Ending investment:	$18,880.10
Years:	5.46

ALDR Historical Price Range
Date	Open	High	Low	Close	Volume
10/16/2019	$18.87	$18.95	$18.86	$18.87	5.23M
10/17/2019	$18.88	$18.91	$18.86	$18.90	5.86M
10/18/2019	$18.88	$18.97	$18.87	$18.92	7.36M
10/21/2019	$18.95	$19.12	$18.82	$18.88	29.06M
10/22/2019	$18.88	$18.88	$18.88	$18.88	0

About ALDR

Alder Biopharmaceuticals is a clinical-stage biopharmaceutical company that discovers, develops and seeks to commercialize therapeutic antibodies with the potential to transform the treatment paradigm in migraine. Co. is focusing on eptinezumab (ALD403). Eptinezumab is a humanized immunoglobulin G1 monoclonal antibody for calcitonin gene-related peptide ligand, a small protein and a target to drive migraine initiation, maintenance and chronification. Co.'s product candidate pipeline also includes ALD1910, a neutralizing monoclonal antibody with reactivity to that targets pituitary adenylate cyclase-activating polypeptide-38.

ALDR Historical Closing Prices
Date	Close
10/16/2019	$18.87
10/17/2019	$18.90
10/18/2019	$18.92
10/21/2019	$18.88
10/22/2019	$18.88

Healthcare Historical Prices

ALDR is categorized under the Healthcare sector; below are some other companies in the same sector: ALDX Historical Stock Prices ALGN Historical Stock Prices ALIM Historical Stock Prices ALKS Historical Stock Prices ALNA Historical Stock Prices ALNY Historical Stock Prices ALOG Historical Stock Prices ALPN Historical Stock Prices ALQA Historical Stock Prices ALR Historical Stock Prices Also explore: ALDR shares outstanding history Free ALDR Email Alerts: Get Dividend Alerts Get SEC Filing Alerts

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