Magnolia Oil & Gas MGY Institutional Ownership

NYSE MGY

$24.08 +0.59 (+2.53%)

At close: Oct 1, 2026 · 4:00 PM EDT

Institutions by Trading Activity

410 Institutions

Increased 223 54.4%

Unchanged 48 11.7%

Reduced 139 33.9%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

113.30%

▲+3.45 pp QoQ

Shares Held by Institutions

208.14Mn

of 183.70Mn outstanding

▲+6.67% QoQ

Shares Outstanding

183.70Mn

-24.44Mn held outside 13F filers

Institutional Investors

410

filed 13F for Jun 2026

▲+8 vs prior quarter

Net Shares Added (QoQ)

+13.02Mn

accumulated since last quarter

Value of Holdings

$4.89Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Magnolia Oil & Gas Corp (NYSE:MGY) has 410 institutional investors that have filed 13F reports for the period ending June 2026.

They owned 113.3% of outstanding stock in June 2026, up from 109.9% the prior quarter.
They increased total shares held in Magnolia Oil & Gas by 6.67% from last quarter, and the number of investors in MGY increased 6.22% annually.
Of these 410 funds, 223 grew their exposure to Magnolia Oil & Gas, 139 cut back, and 48 maintained positions.
Altogether, these fund groups held 208.14Mn shares in MGY by June 2026, up by 13.02Mn shares quarter on quarter, and down 4.78Mn shares year over year.
BlackRock, Inc. holds the largest position in MGY at 31.97Mn shares as of June 30, 2026, or 17.4% of shares outstanding.
Top purchasers of MGY stock for the quarter ending June 2026 included Jupiter Topco LLC (6.43Mn), Sixth Street Partners Management Company, L.P. (2.62Mn), BlackRock, Inc. (2.48Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (2.36Mn), PRICE T ROWE ASSOCIATES INC /MD/ (1.47Mn).
The largest sales of MGY for the quarter ending June 2026 came from FRED ALGER MANAGEMENT, LLC (1.02Mn), TD ASSET MANAGEMENT INC (1.01Mn), Boston Trust Walden Corp (843.15K), VOLORIDGE INVESTMENT MANAGEMENT, LLC (828.82K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (800.28K).
Per Business Quant data, the top 10 holders of Magnolia Oil & Gas for the quarter ending June 2026 are BlackRock, Inc. (31.97Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (15.34Mn), AMERICAN CENTURY COMPANIES INC (11.01Mn), State Street Corp (9.94Mn), VANGUARD CAPITAL MANAGEMENT LLC (7.66Mn), DIMENSIONAL FUND ADVISORS LP (7.12Mn), Jupiter Topco LLC (6.43Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (5.46Mn), T. Rowe Price Investment Management, Inc. (5.18Mn), GEODE CAPITAL MANAGEMENT, LLC (4.8Mn).

Form 13F Holdings

410 Institutional Holders

Report period 30 Jun, 2026

Total shares held 208.14Mn

Of outstanding 113.30%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	31,972,219	17.40%	▲2,481,070	+8.41%	$817.85Mn
2	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	15,341,201	8.35%	▲2,357,806	+18.16%	$392.43Mn
3	AMERICAN CENTURY COMPANIES INC	0000748054	11,011,458	5.99%	▲502,218	+4.78%	$281.67Mn
4	State Street Corp	0000093751	9,941,466	5.41%	▲445,191	+4.69%	$254.30Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	7,663,263	4.17%	▲474,839	+6.61%	$196.03Mn
6	DIMENSIONAL FUND ADVISORS LP	0000354204	7,117,449	3.87%	▲88,668	+1.26%	$182.07Mn
7	Jupiter Topco LLC	0002146052	6,427,893	3.50%	▲6,427,893	0.00%	$164.43Mn
8	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	5,463,526	2.97%	▼800,282	-12.78%	$139.76Mn
9	T. Rowe Price Investment Management, Inc.	0001897612	5,180,518	2.82%	▼13,369	-0.26%	$132.52K
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	4,802,973	2.61%	▲264,861	+5.84%	$122.89Mn
11	NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	0000921739	4,311,973	2.35%	▼660,288	-13.28%	$110.30Mn
12	Bank Of America Corp /De/	0000070858	4,253,346	2.32%	▲375,985	+9.70%	$108.80Mn
13	ALLIANCEBERNSTEIN L.P.	0001109448	4,122,434	2.24%	▼328,808	-7.39%	$130.15Mn
14	TD ASSET MANAGEMENT INC	0001056053	3,934,160	2.14%	▼1,007,819	-20.39%	$100.64Mn
15	Epoch Investment Partners, Inc.	0001305841	3,569,975	1.94%	▼705,534	-16.50%	$91.32Mn
16	Morgan Stanley	0000895421	3,429,471	1.87%	▲401,496	+13.26%	$87.73Mn
17	VICTORY CAPITAL MANAGEMENT INC	0001040188	2,982,883	1.62%	▼108,170	-3.50%	$76.30Mn
18	GW&K Investment Management, LLC	0001082917	2,917,419	1.59%	▼163,845	-5.32%	$74.63K
19	SYSTEMATIC FINANCIAL MANAGEMENT LP	0001085936	2,777,352	1.51%	▼35,926	-1.28%	$71.04Mn
20	Allspring Global Investments Holdings, LLC	0001890906	2,667,136	1.45%	▼31,868	-1.18%	$66.63Mn

Showing 1 to 20 of 410 holders