SPDR - S&P MIDCAP 400 Symbol: MDY

The S&P MIDCAP 400 fund is an exchange traded fund (ETF) within the SPDR family. There are at least 30 funds that are incredibly highly correlated with MDY.

Within the SPDR family of funds, the most positively correlated other funds are S&P 600 Small Cap, S&P 400 Mid Cap Growth, Russell Small Cap Completeness, S&P 600 Small Cap Value, Barclays Convertible Securities.

Outside of the SPDR family, the most positively correlated other funds are iShares - Core S&P Mid-Cap ETF, Schwab - Mid-Cap Core, Vanguard Mutual Funds - Small-Cap Index Admiral Shares, Fidelity - Spartan Mid-Cap Index Fund - Investor Class , Fidelity - Spartan Mid-Cap Index Fund - Fidelity Advantage Class .

Extremely Similar Funds

There are multiple other funds which have extremely high correlation to SPDR's S&P MIDCAP 400 fund.

100.0%	IJH	iShares	Core S&P Mid-Cap ETF
99.9%	SCHM	Schwab	Mid-Cap Core
99.9%	VSMAX	Vanguard Mutual Funds	Small-Cap Index Admiral Shares
99.9%	FSCLX	Fidelity	Spartan Mid-Cap Index Fund - Investor Class
99.9%	FSCKX	Fidelity	Spartan Mid-Cap Index Fund - Fidelity Advantage Class
99.9%	VB	Vanguard	Small-Cap
99.8%	VXF	Vanguard	Extended Market
99.8%	IWR	iShares	Russell Mid-Cap ETF
99.8%	FSEVX	Fidelity	Spartan Extended Market Index Fund - Fidelity Advantage Class
99.8%	VTMSX	Vanguard Mutual Funds	Tax-Managed Small-Cap Admiral Shares
99.8%	SLY	SPDR	S&P 600 Small Cap
99.8%	IJT	iShares	S&P Small-Cap 600 Growth ETF
99.8%	IWP	iShares	Russell Mid-Cap Growth ETF
99.8%	VIMAX	Vanguard Mutual Funds	Mid-Cap Index Admiral Shares
99.8%	VMVAX	Vanguard Mutual Funds	Mid-Cap Value Index Admiral
99.8%	VEXAX	Vanguard Mutual Funds	Extended Market Index Admiral Shares
99.8%	MDYG	SPDR	S&P 400 Mid Cap Growth
99.8%	AOA	iShares	Aggressive Allocation ETF
99.8%	JKG	iShares	Morningstar Mid-Cap ETF
99.8%	IJR	iShares	Core S&P Small-Cap ETF
99.7%	VFFVX	Vanguard Mutual Funds	Target Retirement 2055
99.7%	VO	Vanguard	Mid-Cap
99.7%	RSCO	SPDR	Russell Small Cap Completeness
99.7%	VBK	Vanguard	Small-Cap Growth
99.7%	IJJ	iShares	S&P Mid-Cap 400 Value ETF
99.7%	SCHA	Schwab	Small-Cap Core
99.7%	AOR	iShares	Growth Allocation ETF
99.6%	EUSA	iShares	MSCI USA ETF
99.6%	VEVFX	Vanguard Mutual Funds	Explorer Value
99.6%	SCHB	Schwab	Multi-Cap Core