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State Street® SPDR® S&P 400™ Mid Cap Growth ETF

SPDR · US78464A8210

State Street® SPDR® S&P 400™ Mid Cap Growth ETF is an exchange-traded fund (ETF) from SPDR, traded under the ticker MDYG (ISIN US78464A8210). It lets you buy a basket of holdings in a single trade, spreading your money across them rather than one company. In plain terms it is about owning small slices of companies, so you share in their…

· Tracks the S&P MidCap 400 Growth Index index ?

Equity ?Unknown Physical ?United States ?

Low yearly feeOwns the shares directlyOtherBroadly spread

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SPDR funds Domiciled in United States Unknown Physically replicated Other stocks Yearly fee under 0.25%

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Fund size (AUM) ?

€2.5B

1-year return ?

+14.5%

Price Return · to 2026-09-29

Yearly fee (TER) ?

0.15%

All-in cost ≈ 0.00%

About this fund

What you own

The S&P MidCap 400 Growth Index index is the benchmark this fund aims to copy. By holding it, this fund gives you a stake in around 248 companies across Other in a single purchase.

How it works

The fund actually buys every share in the index it tracks (full replication).

Owning every holding keeps things transparent — what is in the index is what the fund actually owns. It can be a touch costlier to run for indexes with thousands of tiny positions, since the fund has to buy and maintain them all. There is no swap bank involved, so there is no extra “what if the partner fails” question to weigh.

Cost

0.15%Yearly fee (TER)

0.00%All-in cost

The yearly running cost of the fund, shown as a % of your money. Lower is cheaper.

For example, a 0.20% fee works out at €0.20 a year for every €100 invested — that’s a generic illustration of the mechanic, not this fund’s own fee. It is skimmed quietly from inside the fund a little each day, so you never get a bill — but it drags on your return every year you hold. On a broad index ETF it is usually a small fraction of a percent; the gap between a cheap and a pricey fund looks tiny on day one but compounds over decades, which is why it is worth a glance.

Fund facts

Index tracked ?

S&P MidCap 400 Growth Index

Replication ?

Physical

Full — buys every share

Launched

Nov 2005

21-year track record

Performance

Growth of $100 invested — the line starts at $100.

State Street® SPDR® S&P 400™ Mid Cap Growth ETF

End-of-day prices, rebased to a common start so the shapes are comparable. Past performance does not predict future results.

YTD+13.4%

1 year+14.5%

3 years+14.9%

5 years+6.7%

Return, year by year

-19.9

+15.8

+14.8

+6.4

'22'23'24'25

3 of 4 up yearsBest: 2023 +15.8%Worst: 2022 -19.9%Calendar-year total returns, in USD

How bumpy has it been?

17.7%

Volatility (1y) ?

How much the price swings year to year — lower is calmer.

-25.8%

Worst drop (3y) ?

The biggest fall from a peak over the last three years.

0.79

Return for the risk (3y) ?

Reward earned per unit of bumpiness.

The bigger picture

+34.3%

Since inception

Total growth since launch — about +5.8% a year.

+43.2%

Best 12 months

The strongest one-year stretch on record.

-23.5%

Worst 12 months

The weakest one-year stretch on record.

-29.4%

Worst fall on record ?

It clawed back in about 21 months.

What's inside

By sector ?

Industrials27.7%

Technology19.8%

Health Care11.2%

Financials7.4%

Consumer Discretionary6.8%

Corporate6.0%

Cash/Other5.4%

Real Estate4.4%

The 10 biggest holdings make up 14.8% of the fund — the rest is spread across roughly 238 more companies.

Top 10 holdings

#	Company	Weight
1	TWILIO INC A	2.1%
2	OKTA INC	1.8%
3	EVERPURE INC A	1.7%
4	TECHNIPFMC PLC	1.7%
5	ATI INC	1.4%
6	NVENT ELECTRIC PLC	1.3%
7	TENET HEALTHCARE CORP	1.3%
8	UNITED THERAPEUTICS CORP	1.2%
9	XPO INC	1.2%
10	CURTISS WRIGHT CORP	1.2%

Where to buy this fund

Where you live:

Set from your language & location — change it if it's wrong.

Where it trades

Exchange	Ticker	Currency
NYSE	MDYG	USD	★ Primary
USD listings
E1	MDYGUSD	USD
EU	MDYGUSD	USD
MF	MDYG*	USD
MM	MDYG*	USD
MU	MDYG*	USD
NYSE Arca	MDYG	USD
OC	MDYG	USD
OD	MDYG	USD
TH	4JZ8	USD
UA	MDYG	USD
UB	MDYG	USD
UC	MDYG	USD
UD	MDYG	USD
UF	MDYG	USD
UM	MDYG	USD
US	MDYG	USD
UT	MDYG	USD
UX	MDYG	USD
VF	MDYG	USD
VG	MDYG	USD
VJ	MDYG	USD
VK	MDYG	USD
VP	MDYG	USD
VY	MDYG	USD
X2	MDYGUSD	USD
XA	MDYGUSD	USD
XB	MDYGUSD	USD
XE	MDYGUSD	USD
XF	MDYGUSD	USD
XG	MDYGUSD	USD
XH	MDYGUSD	USD
XJ	MDYGUSD	USD
XL	MDYGUSD	USD
XO	MDYGUSD	USD
XQ	MDYGUSD	USD
XS	MDYGUSD	USD
XU	MDYGUSD	USD
XV	MDYGUSD	USD
XW	MDYGUSD	USD
XX	MDYGUSD	USD
XZ	MDYGUSD	USD

For serious comparison — full data holdings, percentiles, advanced risk, tilt, flows

Full holdings

As of 2026-09-29 · the fund's own published holdings.

#	Company	Weight
1	TWILIO INC A	2.1%
2	OKTA INC	1.8%
3	EVERPURE INC A	1.7%
4	TECHNIPFMC PLC	1.7%
5	ATI INC	1.4%
6	NVENT ELECTRIC PLC	1.3%
7	TENET HEALTHCARE CORP	1.3%
8	UNITED THERAPEUTICS CORP	1.2%
9	XPO INC	1.2%
10	CURTISS WRIGHT CORP	1.2%
11	CARPENTER TECHNOLOGY	1.2%
12	COEUR MINING INC	1.2%
13	ROKU INC	1.2%
14	ROYAL GOLD INC	1.1%
15	WOODWARD INC	1.1%
16	ILLUMINA INC	1.0%
17	ITT INC	1.0%
18	DYNATRACE INC	0.9%
19	RB GLOBAL INC	0.9%
20	MACOM TECHNOLOGY SOLUTIONS H	0.9%
21	RBC BEARINGS INC	0.9%
22	JAZZ PHARMACEUTICALS PLC	0.8%
23	NEUROCRINE BIOSCIENCES INC	0.8%
24	SOMNIGROUP INTERNATIONAL INC	0.8%
25	TOAST INC CLASS A	0.8%
26	EXELIXIS INC	0.8%
27	API GROUP CORP	0.8%
28	STERLING INFRASTRUCTURE INC	0.8%
29	CACI INTERNATIONAL INC CL A	0.8%
30	MEDPACE HOLDINGS INC	0.8%
31	MASTEC INC	0.8%
32	FABRINET	0.8%
33	BWX TECHNOLOGIES INC	0.8%
34	FIVE BELOW	0.7%
35	TALEN ENERGY CORP	0.7%
36	HALOZYME THERAPEUTICS INC	0.7%
37	GUIDEWIRE SOFTWARE INC	0.7%
38	HECLA MINING CO	0.7%
39	PENUMBRA INC	0.7%
40	SITIME CORP	0.7%
41	ENCOMPASS HEALTH CORP	0.7%
42	TTM TECHNOLOGIES	0.7%
43	NEW YORK TIMES CO A	0.6%
44	ELANCO ANIMAL HEALTH INC	0.6%
45	COCA COLA CONSOLIDATED INC	0.6%
46	TEXAS ROADHOUSE INC	0.6%
47	MKS INC	0.6%
48	NUTANIX INC A	0.6%
49	ROIVANT SCIENCES LTD	0.6%
50	SANMINA CORP	0.6%
51	MOOG INC CLASS A	0.6%
52	ENSIGN GROUP INC/THE	0.6%
53	ARROWHEAD PHARMACEUTICALS IN	0.6%
54	SEMTECH CORP	0.6%
55	MUELLER INDUSTRIES INC	0.5%
56	WATTS WATER TECHNOLOGIES A	0.5%
57	DIGITALOCEAN HOLDINGS INC	0.5%
58	TETRA TECH INC	0.5%
59	ADVANCED ENERGY INDUSTRIES	0.5%
60	LINCOLN ELECTRIC HOLDINGS	0.5%
61	BRIGHTSPRING HEALTH SERVICES	0.5%
62	DT MIDSTREAM INC	0.5%
63	AFFILIATED MANAGERS GROUP	0.5%
64	CARETRUST REIT INC	0.5%
65	FLOWSERVE CORP	0.5%
66	EAST WEST BANCORP INC	0.5%
67	RAMBUS INC	0.5%
68	KRATOS DEFENSE + SECURITY	0.5%
69	SPX TECHNOLOGIES INC	0.5%
70	KRYSTAL BIOTECH INC	0.5%
71	BURLINGTON STORES INC	0.5%
72	LATTICE SEMICONDUCTOR CORP	0.5%
73	DYCOM INDUSTRIES INC	0.5%
74	GLOBUS MEDICAL INC A	0.5%
75	INTERDIGITAL INC	0.5%
76	FIRSTCASH HOLDINGS INC	0.5%
77	DOCUSIGN INC	0.5%
78	FIRST INDUSTRIAL REALTY TR	0.5%
79	HEALTHEQUITY INC	0.5%
80	WP CAREY INC	0.5%
81	CLEAN HARBORS INC	0.5%
82	KINSALE CAPITAL GROUP INC	0.5%
83	ENTEGRIS INC	0.4%
84	VIAVI SOLUTIONS INC	0.4%
85	TRANSUNION	0.4%
86	LAMAR ADVERTISING CO A	0.4%
87	NEXTPOWER INC	0.4%
88	OMEGA HEALTHCARE INVESTORS	0.4%
89	MANHATTAN ASSOCIATES INC	0.4%
90	EQUITABLE HOLDINGS INC	0.4%
91	RENAISSANCERE HOLDINGS LTD	0.4%
92	BIOMARIN PHARMACEUTICAL INC	0.4%
93	ANTERO MIDSTREAM CORP	0.4%
94	HEXCEL CORP	0.4%
95	DONALDSON CO INC	0.4%
96	NEWMARKET CORP	0.4%
97	SUN COMMUNITIES INC	0.4%
98	EASTGROUP PROPERTIES INC	0.4%
99	GRACO INC	0.4%
100	QUALYS INC	0.4%
101	EVERCORE INC A	0.4%
102	STIFEL FINANCIAL CORP	0.4%
103	APPLIED INDUSTRIAL TECH INC	0.4%
104	PAYLOCITY HOLDING CORP	0.4%
105	ENERSYS	0.4%
106	AMERICAN HEALTHCARE REIT INC	0.3%
107	ACUITY INC	0.3%
108	PINTEREST INC CLASS A	0.3%
109	EQUITY LIFESTYLE PROPERTIES	0.3%
110	SERVICE CORP INTERNATIONAL	0.3%
111	HIMS + HERS HEALTH INC	0.3%
112	ONTO INNOVATION INC	0.3%
113	SEI INVESTMENTS COMPANY	0.3%
114	VALARIS LTD	0.3%
115	DROPBOX INC CLASS A	0.3%
116	CARLISLE COS INC	0.3%
117	ORMAT TECHNOLOGIES INC	0.3%
118	EXLSERVICE HOLDINGS INC	0.3%
119	VALMONT INDUSTRIES	0.3%
120	IES HOLDINGS INC	0.3%
121	APPFOLIO INC A	0.3%
122	CHURCHILL DOWNS INC	0.3%
123	PRIMERICA INC	0.3%
124	RPM INTERNATIONAL INC	0.3%
125	GAMING AND LEISURE PROPERTIE	0.3%
126	SABRA HEALTH CARE REIT INC	0.3%
127	ADVANCED DRAINAGE SYSTEMS IN	0.3%
128	CYTOKINETICS INC	0.3%
129	REPLIGEN CORP	0.3%
130	CULLEN/FROST BANKERS INC	0.3%
131	AAON INC	0.3%
132	AEROVIRONMENT INC	0.3%
133	UL SOLUTIONS INC CLASS A	0.3%
134	SOTERA HEALTH CO	0.3%
135	AUTOLIV INC	0.3%
136	COGNEX CORP	0.3%
137	CRANE CO	0.3%
138	ALLISON TRANSMISSION HOLDING	0.3%
139	NATIONAL FUEL GAS CO	0.3%
140	SOLSTICE ADV MATERIALS INC	0.3%
141	OLD REPUBLIC INTL CORP	0.3%
142	UIPATH INC CLASS A	0.3%
143	HYATT HOTELS CORP CL A	0.3%
144	LANTHEUS HOLDINGS INC	0.3%
145	OLLIE S BARGAIN OUTLET HOLDI	0.2%
146	CELSIUS HOLDINGS INC	0.2%
147	LIVANOVA PLC	0.2%
148	STAG INDUSTRIAL INC	0.2%
149	DUOLINGO	0.2%
150	VICOR CORP	0.2%
151	FEDERATED HERMES INC	0.2%
152	LITTELFUSE INC	0.2%
153	CARLYLE GROUP INC/THE	0.2%
154	BOYD GAMING CORP	0.2%
155	WEX INC	0.2%
156	OSHKOSH CORP	0.2%
157	CUBESMART	0.2%
158	GRAND CANYON EDUCATION INC	0.2%
159	TRAVEL LEISURE CO	0.2%
160	PLANET FITNESS INC CL A	0.2%
161	BRIXMOR PROPERTY GROUP INC	0.2%
162	AMERICAN FINANCIAL GROUP INC	0.2%
163	MP MATERIALS CORP	0.2%
164	MSA SAFETY INC	0.2%
165	HOULIHAN LOKEY INC	0.2%
166	SILICON LABORATORIES INC	0.2%
167	IDACORP INC	0.2%
168	AGREE REALTY CORP	0.2%
169	ELF BEAUTY INC	0.2%
170	BIO RAD LABORATORIES A	0.2%
171	OPTION CARE HEALTH INC	0.2%
172	GATX CORP	0.2%
173	AECOM	0.2%
174	COMMVAULT SYSTEMS INC	0.2%
175	VALVOLINE INC	0.2%
176	CIRRUS LOGIC INC	0.2%
177	NNN REIT INC	0.2%
178	HANOVER INSURANCE GROUP INC/	0.2%
179	SIMPSON MANUFACTURING CO INC	0.2%
180	DOXIMITY INC CLASS A	0.2%
181	KIRBY CORP	0.2%
182	CHEWY INC CLASS A	0.2%
183	CORE + MAIN INC CLASS A	0.2%
184	PEGASYSTEMS INC	0.2%
185	CHEMED CORP	0.2%
186	BRUKER CORP	0.2%
187	DICK S SPORTING GOODS INC	0.2%
188	MGIC INVESTMENT CORP	0.2%
189	BRINK S CO/THE	0.2%
190	H+R BLOCK INC	0.2%
191	DUTCH BROS INC CLASS A	0.2%
192	BENTLEY SYSTEMS INC CLASS B	0.2%
193	HAEMONETICS CORP/MASS	0.2%
194	RYAN SPECIALTY HOLDINGS INC	0.2%
195	EAGLE MATERIALS INC	0.2%
196	SPROUTS FARMERS MARKET INC	0.2%
197	STANDARDAERO INC	0.2%
198	WINGSTOP INC	0.2%
199	FORTUNE BRANDS INNOVATIONS I	0.2%
200	SLM CORP	0.2%
201	WYNDHAM HOTELS + RESORTS INC	0.2%
202	NEXSTAR MEDIA GROUP INC	0.1%
203	GENPACT LTD	0.1%
204	ESSENT GROUP LTD	0.1%
205	ALLEGRO MICROSYSTEMS INC	0.1%
206	WEATHERFORD INTERNATIONAL PL	0.1%
207	TXNM ENERGY INC	0.1%
208	AMKOR TECHNOLOGY INC	0.1%
209	ABERCROMBIE + FITCH CO CL A	0.1%
210	VAIL RESORTS INC	0.1%
211	EPR PROPERTIES	0.1%
212	CROCS INC	0.1%
213	NOVANTA INC	0.1%
214	MSC INDUSTRIAL DIRECT CO A	0.1%
215	HILTON GRAND VACATIONS INC	0.1%
216	WARNER MUSIC GROUP CORP CL A	0.1%
217	MORNINGSTAR INC	0.1%
218	BILL HOLDINGS INC	0.1%
219	CAVA GROUP INC	0.1%
220	TEXAS CAPITAL BANCSHARES INC	0.1%
221	SPIRE INC	0.1%
222	HAMILTON LANE INC CLASS A	0.1%
223	VONTIER CORP	0.1%
224	BELDEN INC	0.1%
225	GENTEX CORP	0.1%
226	GRAHAM HOLDINGS CO CLASS B	0.1%
227	FIRST FINL BANKSHARES INC	0.1%
228	NORTHWESTERN ENERGY GROUP IN	0.1%
229	INTERNATIONAL BANCSHARES CRP	0.1%
230	YETI HOLDINGS INC	0.1%
231	FTI CONSULTING INC	0.1%
232	ESAB CORP	0.1%
233	EXPONENT INC	0.1%
234	PARSONS CORP	0.1%
235	MAXIMUS INC	0.1%
236	COPT DEFENSE PROPERTIES	0.1%
237	DOLBY LABORATORIES INC CL A	0.1%
238	SHIFT4 PAYMENTS INC CLASS A	0.1%
239	MATTEL INC	0.1%
240	UNIVERSAL DISPLAY CORP	0.1%
241	AVIS BUDGET GROUP INC	0.1%
242	KNIFE RIVER CORP	0.1%
243	SSI US GOV MONEY MARKET CLASS	0.1%
244	CHOICE HOTELS INTL INC	0.1%
245	MARZETTI COMPANY/THE	0.1%
246	CRANE NXT CO	0.1%
247	CAPRI HOLDINGS LTD	0.0%
248	US DOLLAR	0.0%

⭳ Download full holdings (CSV)

How it ranks vs peers

🪙 Cheaper than 76% of similar ETFs📈 Higher 1-yr return than 51%📈 Higher 3-yr return than 70%📈 Higher 5-yr return than 68%📊 Behind its category by 0.3% (1-yr) (category average +14.9%)📊 Beat its category by 2.4% (3-yr) (category average +12.4%)📊 Beat its category by 1.6% (5-yr) (category average +5.2%)

Versus the Equity (stocks) · Other · USD ETFs we track.

Advanced risk

1.17

Sortino (3y) ?

0.58

Calmar (3y) ?

11.9%

Downside deviation ?

67%

Up months (hit rate) ?

$113.69

52-week high ?

$87.24

52-week low ?

Concentration depth

~148 ?

Effective number of holdings

Roughly 248 companies are held, but the largest names carry most of the weight — so it behaves like ~148 equal-sized positions.

Tilt vs a world tracker

Industrials+16.1

Technology-9.4

Financials-8.9

Corporate+6.0

Communication Services-6.0

Cash/Other+5.4

Percentage points over / under a broad world-equity tracker (not a licensed benchmark).

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Why it's similar	This is the fund on this page.	StocksUnknownPhysicalCheaper fee Tracks a different index in the same category.	StocksUnknownPhysicalCheaper fee Tracks a different index in the same category.	StocksUnknownPhysicalCheaper fee Tracks a different index in the same category.	StocksUnknownPhysicalCheaper fee Tracks a different index in the same category.	StocksUnknownPhysicalCheaper fee Tracks a different index in the same category.	StocksUnknownPhysicalCheaper fee Tracks a different index in the same category.
Index tracked	S&P MidCap 400 Growth Index	Technology Select Sector Index	FTSE Developed ex US Index	Financial Select Sector Index	Health Care Select Sector Index	Energy Select Sector Index	Industrial Select Sector Index
Yearly fee (TER)	0.15%	0.08%	0.03%	0.08%	0.08%	0.08%	0.08%
All-in cost	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
Fund size	€2.5B	€115.1B	€58.5B	€46.4B	€39.4B	€35.2B	€27B
Domicile	United States	United States	United States	United States	United States	United States	United States
Replication	Physical (full)	Physical (full)	Physical (full)	Physical (full)	Physical (full)	Physical (full)	Physical (full)
3-yr return p.a.	+14.9%	+34.9%	+13.9%	+17.6%	+9.9%	+10.8%	+18.6%
5-yr return p.a.	+6.7%	+21.4%	+6.7%	+7.6%	+6.0%	+18.8%	+11.6%
# holdings	248	77	1,494	80	63	24	86

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Data as of 2026-09-29 · Source: issuer data, compiled by Finance Hamster

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