Vault-13

PEDIATRIX MEDICAL GROUP INC MD

COM · Common Stock · CUSIP 58502B106 · ISIN US58502B1061

American physician-led national medical group

228 institutional holders +15 vs Q1 2024
88,212,96288.2m shares reported held*
102.7% of all shares outstanding*
$665.6mreported value*
46 new 72 added 82 reduced 32 sold out net sold ≈ $11.4m (-1.5m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($2.1m this quarter). Holder counts are more reliable. Shares outstanding: 85.9m as of 2024-08-02, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $7.55. Options: 2 managers hold calls ($164.6k notional), 3 hold puts ($49.2k).

Trends to Q2 2024

Institutional holders

Managers reporting a position, each quarter

0100200300Q3 22: 210Q4 22: 209Q1 23: 213Q2 23: 214Q3 23: 204Q4 23: 223Q1 24: 213Q2 24: 228228Q3 22Q1 23Q3 23Q1 24Q2 24
Numbers
QuarterHolders
Q3 2022210
Q4 2022209
Q1 2023213
Q2 2023214
Q3 2023204
Q4 2023223
Q1 2024213
Q2 2024228

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
2000200Q4 22: 99 bought or addedQ4 22: 106 cut or sold outQ4 22Q1 23: 125 bought or addedQ1 23: 85 cut or sold outQ2 23: 101 bought or addedQ2 23: 103 cut or sold outQ2 23Q3 23: 91 bought or addedQ3 23: 109 cut or sold outQ4 23: 119 bought or addedQ4 23: 79 cut or sold outQ4 23Q1 24: 96 bought or addedQ1 24: 115 cut or sold outQ2 24: 118 bought or addedQ2 24: 114 cut or sold outQ2 24
Numbers
QuarterBought or addedCut or sold out
Q4 202299106
Q1 202312585
Q2 2023101103
Q3 202391109
Q4 202311979
Q1 202496115
Q2 2024118114

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$200k$400k$600kQ3 23 calls: $405.3kQ3 23 puts: $155.1kQ3 23P/C 0.38Q4 23 calls: $261.2kQ4 23 puts: $27.4kQ4 23P/C 0.10Q1 24 calls: $429.2kQ1 24 puts: $26.1kQ1 24P/C 0.06Q2 24 calls: $164.6kQ2 24 puts: $49.2kQ2 24P/C 0.30
Numbers
QuarterCallsPutsP/C
Q3 2023$405.3k$155.1k0.38
Q4 2023$261.2k$27.4k0.10
Q1 2024$429.2k$26.1k0.06
Q2 2024$164.6k$49.2k0.30

Biggest buyers

Rubric Capital Management LP Added +7,241,400+7.2m
Weiss Asset Management LP New +606,675+606.7k
Tejara Capital Ltd New +602,885+602.9k
Dana Investment Advisors, Inc. Added +455,785+455.8k
CASPIAN CAPITAL LP New +450,000+450.0k
CastleKnight Management LP New +422,525+422.5k
GOLDMAN SACHS GROUP INC Added +387,844+387.8k
BANK OF AMERICA CORP /DE/ Added +367,058+367.1k
Qube Research & Technologies Ltd Added +326,537+326.5k
D. E. Shaw & Co., Inc. Added +318,373+318.4k

Biggest sellers

Pacer Advisors, Inc. Sold out -5,228,815-5.2m
EARNEST PARTNERS LLC Sold out -4,790,996-4.8m
MORGAN STANLEY Reduced -1,868,174-1.9m
Allianz Asset Management GmbH Sold out -691,333-691.3k
FIRST TRUST ADVISORS LP Sold out -457,940-457.9k
DIMENSIONAL FUND ADVISORS LP Reduced -438,387-438.4k
ALLIANCEBERNSTEIN L.P. Reduced -378,805-378.8k
ENVESTNET ASSET MANAGEMENT INC Sold out -277,237-277.2k
NORGES BANK Reduced -267,077-267.1k
Cinctive Capital Management LP Sold out -251,770-251.8k

Biggest calls

CITADEL ADVISORS LLC Reduced $164.6k21.8k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

CITADEL ADVISORS LLC Added $36.2k4.8k shares
SIMPLEX TRADING, LLC Added $13.0k1.8k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
BlackRock, Inc. 13G · institution filed 2025-07-17 14.6% 12.5m≈ $316.9m 2025-07-17
VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-09-03 7.5% new 6.3m≈ $159.0m 2026-09-03
VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-09-03 5.2% new 4.3m≈ $108.5m 2026-09-03
DIMENSIONAL FUND ADVISORS LP 13G · institution new · filed 2026-07-14 5.1% new 4.2m≈ $106.9m 2026-07-14

Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-09-03; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)

Insider purchases and sales in Q2 2024

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q3 22: 0 buyingQ3 22: 0 sellingQ4 22: 0 buyingQ4 22: 2 sellingQ4 22Q1 23: 0 buyingQ1 23: 0 sellingQ2 23: 0 buyingQ2 23: 3 sellingQ2 23Q3 23: 0 buyingQ3 23: 0 sellingQ4 23: 0 buyingQ4 23: 2 sellingQ4 23Q1 24: 0 buyingQ1 24: 0 sellingQ2 24: 0 buyingQ2 24: 0 sellingQ2 24
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q3 20220—0——
Q4 20220—2$709.9k—
Q1 20230—0——
Q2 20230—3$881.7k—
Q3 20230—0——
Q4 20230—2$75.6k—
Q1 20240—0——
Q2 20240—0——

None reported in Q2 2024.

Holders, Q2 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BlackRock Inc. 0.00% of their portfolio New York, NY 13,693,13213.7m $103.4m $103.4m 0.00% Added +142.7k +142,701
2 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 10,554,41110.6m $79.7m $79.7m 0.00% Reduced -3.2k -3,161
3 Rubric Capital Management LP 1.62% of their portfolio NEW YORK, NY 8,150,0008.2m $61.5m $61.5m 1.62% Added +7.2m +7,241,400
4 ALLIANCEBERNSTEIN L.P. 0.02% of their portfolio NASHVILLE, TN 7,705,4117.7m $58.2m $58.2m 0.02% Reduced -378.8k -378,805
5 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 3,644,4133.6m $27.5m $27.5m 0.00% Reduced -1.9m -1,868,174
6 DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio AUSTIN, TX 3,572,0143.6m $27.0m $27.0m 0.01% Reduced -438.4k -438,387
7 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 3,490,1943.5m $26.4m $26.4m 0.00% Added +105.3k +105,276
8 D. E. Shaw & Co., Inc. 0.03% of their portfolio New York, NY 2,463,8602.5m $18.6m $18.6m 0.03% Added +318.4k +318,373
9 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 2,003,6422.0m $15.1m $15.1m 0.00% Reduced -136.5k -136,476
10 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 1,891,5961.9m $14.3m $14.3m 0.00% Added +74.8k +74,840
11 Boston Partners 0.02% of their portfolio BOSTON, MA 1,691,7001.7m $12.7m $12.7m 0.02% Reduced -94.7k -94,734
12 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 1,615,2131.6m $12.2m $12.2m 0.00% Reduced -186.2k -186,159
13 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 1,364,7101.4m $10.3m $10.3m 0.00% Added +143.7k +143,692
14 SEGALL BRYANT & HAMILL, LLC 0.18% of their portfolio CHICAGO, IL 1,319,2391.3m $10.0m $10.0m 0.18% Reduced -245.4k -245,431
15 Dana Investment Advisors, Inc. 0.26% of their portfolio BROOKFIELD, WI 1,023,1361.0m $7.7m $7.7m 0.26% Added +455.8k +455,785
16 CITADEL ADVISORS LLC 0.01% of their portfolio MIAMI, FL 994,540994.5k $7.5m $7.5m 0.01% Added +247.4k +247,415
17 AQR CAPITAL MANAGEMENT LLC 0.01% of their portfolio Greenwich, CT 942,427942.4k $6.8m $6.8m 0.01% Reduced -98.7k -98,708
18 Invenomic Capital Management LP 0.37% of their portfolio BOSTON, MA 932,108932.1k $7.0m $7.0m 0.37% Reduced -40.7k -40,741
19 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 899,857899.9k $6.8m $6.8m 0.00% Added +367.1k +367,058
20 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 783,553783.6k $5.9m $5.9m 0.00% Reduced -56.9k -56,860
21 ArrowMark Colorado Holdings LLC 0.07% of their portfolio Denver, CO 758,845758.8k $5.7m $5.7m 0.07% Added +18.2k +18,241
22 Aristotle Capital Boston, LLC 0.19% of their portfolio BOSTON, MA 741,106741.1k $5.6m $5.6m 0.19% Reduced -59.9k -59,850
23 BRANDES INVESTMENT PARTNERS, LP 0.07% of their portfolio LA JOLLA, CA 735,068735.1k $5.4m $5.4m 0.07% Added +83.6k +83,588
24 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 723,875723.9k $5.5m $5.5m 0.00% Reduced -5.5k -5,465
25 Weiss Asset Management LP 0.22% of their portfolio BOSTON, MA 606,675606.7k $4.6m $4.6m 0.22% New
26 Tejara Capital Ltd 1.66% of their portfolio London, X0 602,885602.9k $4.6m $4.6m 1.66% New
27 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 593,053593.1k $4.5m $4.5m 0.00% Added +387.8k +387,844
28 PRUDENTIAL FINANCIAL INC 0.01% of their portfolio NEWARK, NJ 563,323563.3k $4.3m $4.3m 0.01% Added +100.4k +100,353
29 NORGES BANK 0.00% of their portfolio OSLO, Q8 560,260560.3k $4.2m $4.2m 0.00% Reduced -267.1k -267,077
30 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.09% of their portfolio HOUSTON, TX 518,304518.3k $3.9m $3.9m 0.09% Added +18.2k +18,180
31 PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio DES MOINES, IA 450,037450.0k $3.4m $3.4m 0.00% Reduced -16.4k -16,450
32 CASPIAN CAPITAL LP 6.13% of their portfolio New York, NY 450,000450.0k $3.4m $3.4m 6.13% New
33 CastleKnight Management LP 0.43% of their portfolio New York, NY 422,525422.5k $3.2m $3.2m 0.43% New
34 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 415,110415.1k $3.2m $3.2m 0.00% Added +2.1k +2,083
35 RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio NEW YORK, NY 414,000414.0k $3.1m $3.1m 0.01% Reduced -20.3k -20,300
36 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 390,421390.4k $2.9m $2.9m 0.00% Reduced -44.6k -44,621
37 CLARK ESTATES INC/NY 0.49% of their portfolio NEW YORK, NY 342,500342.5k $2.6m $2.6m 0.49% Reduced -12.5k -12,500
38 AXA S.A. 0.00% of their portfolio PARIS, I0 330,528330.5k $2.5m $2.5m 0.00% Added +174.9k +174,928
39 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 328,299328.3k $2.5m $2.5m 0.00% Added +326.5k +326,537
40 Saba Capital Management, L.P. 0.05% of their portfolio NEW YORK, NY 310,041310.0k $2.3m $2.3m 0.05% New
41 Cubist Systematic Strategies, LLC 0.04% of their portfolio STAMFORD, CT 290,336290.3k $2.2m $2.2m 0.04% Added +251.1k +251,072
42 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 267,210267.2k $2.0m $2.0m 0.00% Reduced -11.7k -11,676
43 Trexquant Investment LP 0.03% of their portfolio STAMFORD, CT 262,712262.7k $2.0m $2.0m 0.03% Added +148.0k +148,002
44 Empowered Funds, LLC 0.03% of their portfolio NEWTOWN SQUARE, PA 253,304253.3k $1.9m $1.9m 0.03% Reduced -216.9k -216,944
45 Advisors Preferred, LLC 0.29% of their portfolio ROCKVILLE, MD 235,435235.4k $1.7m $1.7m 0.29% New
46 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 229,099229.1k $1.7m $1.7m 0.00% Added +106.2k +106,159
47 ClariVest Asset Management LLC 0.18% of their portfolio SAN DIEGO, CA 227,927227.9k $1.7m $1.7m 0.18% New
48 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 225,943225.9k $1.7m $1.7m 0.00% Added +42 +42
49 Legal & General Group Plc 0.00% of their portfolio London, X0 225,410225.4k $1.7m $1.7m 0.00% Reduced -5.1k -5,146
50 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 223,205223.2k $1.7m $1.7m 0.00% Unchanged
51 UBS Group AG 0.00% of their portfolio ZURICH, V8 210,461210.5k $1.6m $1.6m 0.00% Added +119.2k +119,229
52 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 196,951197.0k $1.5m $1.5m 0.00% New
53 Public Sector Pension Investment Board 0.01% of their portfolio MONTREAL, A8 182,141182.1k $1.4m $1.4m 0.01% Added +10.3k +10,253
54 NORDEA INVESTMENT MANAGEMENT AB 0.00% of their portfolio STOCKHOLM, V7 177,773177.8k $1.3m $1.3m 0.00% Reduced -32.7k -32,662
55 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 173,680173.7k $1.3m $1.3m 0.00% Added +93.4k +93,424
56 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 168,192168.2k $1.3m $1.3m 0.00% Reduced -15.7k -15,719
57 Walleye Capital LLC 0.01% of their portfolio NEW YORK, NY 167,587167.6k $1.3m $1.3m 0.01% New
58 ROYCE & ASSOCIATES LP 0.01% of their portfolio New York, NY 165,890165.9k $1.3m $1.3m 0.01% Added +14.5k +14,506
59 Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio VANCOUVER, A1 164,086164.1k $1.2m $1.2m 0.01% Added +57.4k +57,412
60 FEDERATED HERMES, INC. 0.00% of their portfolio PITTSBURGH, PA 162,532162.5k $1.2m $1.2m 0.00% Reduced -64.7k -64,702
61 Swiss National Bank 0.00% of their portfolio ZURICH, V8 157,100157.1k $1.2m $1.2m 0.00% Unchanged
62 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 147,400147.4k $1.1m $1.1m 0.00% Reduced -6.4k -6,400
63 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 146,507146.5k $1.1m $1.1m 0.00% Added +127.5k +127,542
64 SASCO CAPITAL INC / CT/ 0.15% of their portfolio FAIRFIELD, CT 144,100144.1k $1.1m $1.1m 0.15% Added +28.5k +28,480
65 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio ALBANY, NY 136,584136.6k $1.0m $1.0m 0.00% Reduced -500 -500
66 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 134,191134.2k $1.0m $1.0m 0.00% Added +83.1k +83,082
67 WINTON GROUP Ltd 0.07% of their portfolio LONDON, X0 130,491130.5k $985.2k $985.2k 0.07% Added +33.1k +33,057
68 Bridge City Capital, LLC 0.33% of their portfolio LAKE OSWEGO, OR 128,978129.0k $973.8k $973.8k 0.33% Added +258 +258
69 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 128,852128.9k $972.8k $972.8k 0.00% Added +104.6k +104,646
70 VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.00% of their portfolio JUPITER, FL 124,642124.6k $941.0k $941.0k 0.00% Reduced -226.3k -226,332
71 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 124,395124.4k $939.2k $939.2k 0.00% Added +15.0k +15,023
72 GSA CAPITAL PARTNERS LLP 0.06% of their portfolio LONDON, X0 109,436109.4k $826.0k $826.0k 0.06% Added +72.7k +72,718
73 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 108,900108.9k $822.0k $822.0k 0.00% New
74 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 105,736105.7k $798.3k $798.3k 0.00% Added +40.9k +40,853
75 Verition Fund Management LLC 0.01% of their portfolio GREENWICH, CT 96,22496.2k $726.5k $726.5k 0.01% Added +81.9k +81,880
76 ARISTEIA CAPITAL, L.L.C. 0.03% of their portfolio GREENWICH, CT 91,03391.0k $687.3k $687.3k 0.03% New
77 South Dakota Investment Council 0.01% of their portfolio SIOUX FALLS, SD 79,65479.7k $601.0k $601.0k 0.01% Reduced -8.7k -8,685
78 CANADA LIFE ASSURANCE Co 0.00% of their portfolio WINNIPEG, A2 79,65379.7k $599.0k $599.0k 0.00% Added +2.8k +2,755
79 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 78,26478.3k $590.9k $590.9k 0.00% Reduced -2.0k -1,983
80 Federation des caisses Desjardins du Quebec 0.00% of their portfolio LEVIS, A8 75,69175.7k $571.5k $571.5k 0.00% Unchanged
81 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 74,30074.3k $561.0k $561.0k 0.00% New
82 M&T Bank Corp 0.00% of their portfolio BUFFALO, NY 71,01771.0k $536.1k $536.1k 0.00% Added +7.2k +7,221
83 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 70,67770.7k $533.6k $533.6k 0.00% Reduced -16.0k -16,031
84 ExodusPoint Capital Management, LP 0.01% of their portfolio NEW YORK, NY 69,92869.9k $528.0k $528.0k 0.01% New
85 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 69,75869.8k $527.0k $527.0k 0.00% Reduced -17.6k -17,611
86 Bridgewater Associates, LP 0.00% of their portfolio Westport, CT 69,04869.0k $521.3k $521.3k 0.00% Reduced -6.6k -6,599
87 Thrivent Financial for Lutherans 0.00% of their portfolio Minneapolis, MN 68,87168.9k $520.0k $520.0k 0.00% Reduced -3.1k -3,128
88 State of Tennessee, Department of Treasury 0.00% of their portfolio NASHVILLE, TN 64,57064.6k $487.5k $487.5k 0.00% Reduced -19.0k -18,966
89 Petrus Trust Company, LTA 0.04% of their portfolio Dallas, TX 63,68763.7k $480.8k $480.8k 0.04% New
90 Jump Financial, LLC 0.01% of their portfolio Chicago, IL 63,21363.2k $477.3k $477.3k 0.01% New
91 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 58,83458.8k $444.2k $444.2k 0.00% Reduced -157.0k -157,034
92 SummerHaven Investment Management, LLC 0.28% of their portfolio STAMFORD, CT 55,95156.0k $422.4k $422.4k 0.28% Added +2.1k +2,069
93 HARBOR CAPITAL ADVISORS, INC. 0.03% of their portfolio CHICAGO, IL 54,48054.5k $411.0k $411.0k 0.03% Added +17.7k +17,678
94 STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio MADISON, WI 53,77053.8k $406.0k $406.0k 0.00% Reduced -11.3k -11,328
95 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 50,13350.1k $378.5k $378.5k 0.00% Added +5.0k +4,982
96 LSV ASSET MANAGEMENT 0.00% of their portfolio CHICAGO, IL 49,50049.5k $374.0k $374.0k 0.00% Unchanged
97 Ensign Peak Advisors, Inc 0.00% of their portfolio SALT LAKE CITY, UT 49,45449.5k $373.4k $373.4k 0.00% Unchanged
98 Corebridge Financial, Inc. 0.00% of their portfolio HOUSTON, TX 48,86948.9k $369.0k $369.0k 0.00% First filing
99 State of Alaska, Department of Revenue 0.00% of their portfolio JUNEAU, AK 48,60848.6k $366.0k $366.0k 0.00% Reduced -1.9k -1,851
100 Illinois Municipal Retirement Fund 0.01% of their portfolio OAK BROOK, IL 47,26347.3k $356.8k $356.8k 0.01% Reduced -2.3k -2,263