Table 9.

Structural breaks in the unconditional variance

Indices/stock	Obs number	Date	Var	Indices/stock	Obs number	Date	Var
S&P 500	754	25/01/1988	14.17	DJIA	744	11/01/1988	17.66
	3073	26/03/1997	0.58		3063	12/03/1997	0.42
	4665	25/07/2003	1.81		4665	25/07/2003	1.70
	5669	23/07/2007	0.46		5669	23/07/2007	0.43
	6783	20/12/2011	3.12		6137	01/06/2009	4.32
	8837	21/02/2020	0.65		8837	21/02/2020	0.79
			5.64				6.42
NASDAQ	3409	27/07/1998	0.83
	4586	02/04/2003	5.86
	5958	12/09/2008	1.20
	6109	21/04/2009	12.07
	8836	20/02/2020	1.17
			5.95
FACEBOOK	496	12/05/2014	10.63	AMAZON	1313	06/08/2002	38.82
	991	28/04/2016	3.32		2499	24/04/2007	6.80
	1421	11/01/2018	1.26		3132	26/10/2009	14.09
			5.93		4777	10/05/2016	4.36
					5147	26/10/2017	1.26
							5.93
TESLA	970	08/05/2014	14.29	APPLE	3139	30/06/1997	12.46
	1947	26/03/2018	5.71		3962	03/10/2000	997.48
	2411	28/01/2020	12.21		6133	26/05/2009	8.75
			34.21		8836	20/02/2020	2.63
							9.78
NETFLIX	605	18/10/2004	31.27	GOOGLE	436	12/05/2006	6.37
	2345	14/09/2011	10.71		811	07/11/2007	2.11
	2747	23/04/2013	26.85		1115	23/01/2009	10.82
			7.01		3902	20/02/2020	2.30
							6.69