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Holdings (Monthly) Guide ↗

Siit Extended Market Index Fund

· Sei Institutional Investments Trust
Monthly Holdings $1.3B AUM 144 positions Period May 2026 Filed Jul 29, 2026 EDGAR ↗ ← All Funds
All 189 New 335 Added 144 Reduced 51 Exited · May 2026 vs Feb 2026
# Name Ticker Since Shares Shares Δ Value Val Δ% % Port Cat
1 MARVELL TECHNOLOGY, INC. 573874104 Feb 2026 132,112 -1,500 $27.1M +148.1% 2.06% EC
2 AST SPACEMOBILE, INC. 00217D100 Feb 2026 33,500 -400 $3.8M +41.5% 0.29% EC
3 XPO, INC. 983793100 Feb 2026 17,690 -200 $3.8M +0.7% 0.29% EC
4 FABRINET G3323L100 Feb 2026 5,535 -40 $3.6M +19.0% 0.28% EC
5 CARPENTER TECHNOLOGY CORPORATION 144285103 Feb 2026 7,421 -80 $3.5M +16.6% 0.27% EC
6 RELIANCE, INC. 759509102 Feb 2026 8,038 -80 $3.1M +19.4% 0.23% EC
7 TD SYNNEX CORPORATION 87162W100 Feb 2026 11,681 -100 $3.1M +65.2% 0.23% EC
8 FIRST CITIZENS BANCSHARES, INC. 31946M103 Feb 2026 1,362 -20 $2.7M +3.3% 0.21% EC
9 TALEN ENERGY CORP 87422Q109 Feb 2026 6,960 -120 $2.7M +2.5% 0.20% EC
10 ROKU, INC. 77543R102 Feb 2026 20,048 -100 $2.6M +31.6% 0.20% EC
11 EAST WEST BANCORP, INC. 27579R104 Feb 2026 21,266 -100 $2.6M +11.4% 0.20% EC
12 W.P. CAREY INC. 92936U109 Feb 2026 33,600 -300 $2.5M -1.2% 0.19% EC
13 Viking Holdings Ltd G93A5A101 Feb 2026 26,700 -200 $2.5M +17.2% 0.19% EC
14 NEUROCRINE BIOSCIENCES, INC. 64125C109 Feb 2026 15,000 -100 $2.4M +18.9% 0.18% EC
15 TENET HEALTHCARE CORPORATION 88033G407 Feb 2026 13,400 -200 $2.3M -27.8% 0.18% EC
16 API GROUP CORPORATION 00187Y100 Feb 2026 56,700 -900 $2.3M -9.2% 0.18% EC
17 DT MIDSTREAM, INC. 23345M107 Feb 2026 15,500 -200 $2.2M -0.5% 0.17% EC
18 MUELLER INDUSTRIES, INC. 624756102 Feb 2026 16,816 -200 $2.2M +7.7% 0.16% EC
19 TRANSUNION 89400J107 Feb 2026 30,194 -200 $2.2M -9.5% 0.16% EC
20 NUTANIX, INC. 67059N108 Feb 2026 39,400 -800 $2.1M +33.3% 0.16% EC
21 PERMIAN RESOURCES CORPORATION 71424F105 Feb 2026 104,685 -3,000 $2.0M +2.2% 0.15% EC
22 RENAISSANCERE HOLDINGS LTD. G7496G103 Feb 2026 7,006 -100 $2.0M -8.6% 0.15% EC
23 Gaming and Leisure Properties, Inc. 36467J108 Feb 2026 41,431 -500 $1.9M -5.1% 0.15% EC
24 FIDELITY NATIONAL FINANCIAL, INC 31620R303 Feb 2026 39,766 -100 $1.9M -10.7% 0.14% EC
25 FIRST HORIZON CORPORATION 320517105 Feb 2026 76,725 -2,200 $1.9M -1.0% 0.14% EC
26 IONIS PHARMACEUTICALS, INC. 462222100 Feb 2026 24,094 -300 $1.8M -6.9% 0.14% EC
27 TEXAS ROADHOUSE, INC. 882681109 Feb 2026 10,166 -100 $1.8M -2.2% 0.14% EC
28 PENUMBRA, INC. 70975L107 Feb 2026 5,760 -120 $1.8M -9.5% 0.14% EC
29 DRAFTKINGS INC. 26142V105 Feb 2026 74,082 -900 $1.8M +1.5% 0.14% EC
30 ALLY FINANCIAL INC. 02005N100 Feb 2026 42,000 -700 $1.8M +6.8% 0.14% EC
31 WEBSTER FINANCIAL CORPORATION 947890109 Feb 2026 24,329 -600 $1.8M -1.6% 0.13% EC
32 CACI INTERNATIONAL INC. 127190304 Feb 2026 3,352 -40 $1.7M -16.8% 0.13% EC
33 COGNEX CORPORATION 192422103 Feb 2026 25,516 -100 $1.7M +20.6% 0.13% EC
34 HF SINCLAIR CORPORATION 403949100 Feb 2026 24,000 -200 $1.7M +38.6% 0.13% EC
35 BIOMARIN PHARMACEUTICAL INC. 09061G101 Feb 2026 28,746 -600 $1.6M -9.1% 0.13% EC
36 STIFEL FINANCIAL CORP. 860630102 Feb 2026 22,559 -200 $1.6M -6.1% 0.12% EC
37 ARROWHEAD PHARMACEUTICALS, INC. 04280A100 Feb 2026 20,300 -500 $1.6M +20.2% 0.12% EC
38 LUMEN TECHNOLOGIES, INC. 550241103 Feb 2026 142,800 -1,500 $1.6M +53.0% 0.12% EC
39 Essential Utilities, Inc. 29670G102 Feb 2026 42,537 -900 $1.6M -9.6% 0.12% EC
40 VALMONT INDUSTRIES, INC. 920253101 Feb 2026 2,974 -40 $1.5M +11.5% 0.12% EC
41 MEDPACE HOLDINGS, INC. 58506Q109 Feb 2026 3,380 -80 $1.5M -3.3% 0.12% EC
42 AMERICAN AIRLINES GROUP INC. 02376R102 Feb 2026 99,100 -400 $1.5M +11.6% 0.11% EC
43 Popular, Inc. 733174700 Feb 2026 9,756 -200 $1.4M +7.5% 0.11% EC
44 FORMFACTOR, INC. 346375108 Feb 2026 11,619 -400 $1.4M +21.8% 0.11% EC
45 DONALDSON COMPANY, INC. 257651109 Feb 2026 17,646 -300 $1.4M -13.2% 0.11% EC
46 FLOWSERVE CORPORATION 34354P105 Feb 2026 19,100 -500 $1.4M -16.9% 0.11% EC
47 AECOM 00766T100 Feb 2026 20,548 -200 $1.4M -29.9% 0.11% EC
48 ACUITY INC. 00508Y102 Feb 2026 4,645 -120 $1.4M -1.4% 0.11% EC
49 DARLING INGREDIENTS INC. 237266101 Feb 2026 23,657 -400 $1.4M +9.3% 0.11% EC
50 On Holding AG H5919C104 Feb 2026 34,000 -700 $1.4M -13.9% 0.11% EC
51 PRIMERICA, INC. 74164M108 Feb 2026 4,849 -80 $1.3M +4.7% 0.10% EC
52 FIRSTCASH HOLDINGS, INC. 33768G107 Feb 2026 5,920 -100 $1.3M +12.2% 0.10% EC
53 COMMERCIAL METALS COMPANY 201723103 Feb 2026 16,741 -200 $1.3M +2.5% 0.10% EC
54 MADRIGAL PHARMACEUTICALS, INC. 558868105 Feb 2026 2,540 -320 $1.3M +2.2% 0.10% EC
55 OLD NATIONAL BANCORP 680033107 Feb 2026 52,133 -700 $1.3M +2.6% 0.10% EC
56 OSHKOSH CORPORATION 688239201 Feb 2026 9,617 -100 $1.3M -24.3% 0.10% EC
57 HALOZYME THERAPEUTICS, INC. 40637H109 Feb 2026 17,458 -200 $1.2M -5.4% 0.09% EC
58 VOYA FINANCIAL, INC. 929089100 Feb 2026 14,300 -300 $1.2M +18.9% 0.09% EC
59 SM ENERGY COMPANY 78454L100 Feb 2026 37,502 -400 $1.2M +31.4% 0.09% EC
60 KIRBY CORPORATION 497266106 Feb 2026 8,126 -800 $1.1M -1.4% 0.09% EC
61 CHORD ENERGY CORPORATION 674215207 Feb 2026 8,630 -100 $1.1M +20.3% 0.09% EC
62 ESCO TECHNOLOGIES INC. 296315104 Feb 2026 3,837 -140 $1.1M +1.6% 0.09% EC
63 MAXLINEAR, INC. 57776J100 Feb 2026 12,044 -1,400 $1.1M +377.6% 0.09% EC
64 LEAR CORPORATION 521865204 Feb 2026 7,771 -100 $1.1M +7.7% 0.08% EC
65 Qiagen N.V. N72482156 Feb 2026 30,142 -1,200 $1.1M -29.3% 0.08% EC
66 WEATHERFORD INTERNATIONAL PUBLIC LIMITED COMPANY G48833118 Feb 2026 10,500 -300 $1.1M -4.5% 0.08% EC
67 NOV INC. 62955J103 Feb 2026 54,300 -1,000 $1.1M -3.3% 0.08% EC
68 COMMERCE BANCSHARES, INC. 200525103 Feb 2026 20,211 -400 $1.1M +0.4% 0.08% EC
69 AXIS CAPITAL HOLDINGS LIMITED G0692U109 Feb 2026 11,068 -400 $1.1M -13.3% 0.08% EC
70 WAYFAIR INC. 94419L101 Feb 2026 14,500 -500 $1.0M -8.5% 0.08% EC
71 Ralliant Corp 750940108 Feb 2026 16,900 -300 $1.0M +32.5% 0.08% EC
72 LITHIA MOTORS, INC. 536797103 Feb 2026 3,553 -80 $1.0M +1.8% 0.08% EC
73 HEXCEL CORPORATION 428291108 Feb 2026 11,398 -1,300 $1.0M -13.0% 0.08% EC
74 KINSALE CAPITAL GROUP, INC. 49714P108 Feb 2026 3,280 -120 $1000K -24.5% 0.08% EC
75 XP Inc. G98239109 Feb 2026 59,000 -2,200 $984K -25.4% 0.07% EC
76 GATES INDUSTRIAL CORPORATION PLC G39108108 Feb 2026 37,700 -800 $977K -7.9% 0.07% EC
77 HEALTHCARE REALTY TRUST INCORPORATED 42226K105 Feb 2026 48,805 -700 $972K +6.4% 0.07% EC
78 URANIUM ENERGY CORP. 916896103 Feb 2026 70,500 -1,400 $971K -11.9% 0.07% EC
79 AXALTA COATING SYSTEMS LTD. G0750C108 Feb 2026 31,500 -900 $969K -10.5% 0.07% EC
80 ETSY, INC. 29786A106 Feb 2026 13,800 -1,900 $937K +8.8% 0.07% EC
81 MATADOR RESOURCES COMPANY 576485205 Feb 2026 17,400 -400 $933K +1.9% 0.07% EC
82 PRIMO BRANDS CORPORATION 741623102 Feb 2026 37,300 -4,200 $925K -1.7% 0.07% EC
83 RAYONIER INC. 754907103 Feb 2026 44,078 -1,100 $921K -5.2% 0.07% EC
84 V.F. CORPORATION 918204108 Feb 2026 52,000 -1,400 $893K -13.9% 0.07% EC
85 LINCOLN NATIONAL CORPORATION 534187109 Feb 2026 25,200 -800 $889K -0.3% 0.07% EC
86 UNITED BANKSHARES, INC. 909907107 Feb 2026 20,456 -600 $888K +2.1% 0.07% EC
87 ALLEGRO MICROSYSTEMS, INC 01749D105 Feb 2026 18,500 -100 $886K +30.6% 0.07% EC
88 BRUKER CORPORATION 116794108 Feb 2026 15,032 -500 $885K +42.1% 0.07% EC
89 MERCURY SYSTEMS, INC. 589378108 Feb 2026 7,923 -100 $885K +23.9% 0.07% EC
90 AVANTOR, INC. 05352A100 Feb 2026 96,951 -3,500 $884K -2.7% 0.07% EC
91 GRANITE CONSTRUCTION INCORPORATED 387328107 Feb 2026 6,434 -100 $880K +0.2% 0.07% EC
92 VORNADO REALTY TRUST 929042109 Feb 2026 26,000 -600 $878K +19.6% 0.07% EC
93 TPG INC. 872657101 Feb 2026 20,372 -500 $867K -4.3% 0.07% EC
94 GLAUKOS CORPORATION 377322102 Feb 2026 8,349 -100 $863K -15.2% 0.07% EC
95 CHURCHILL DOWNS INCORPORATED 171484108 Feb 2026 9,762 -300 $851K -8.0% 0.06% EC
96 PTC THERAPEUTICS, INC. 69366J200 Feb 2026 11,500 -300 $849K +5.5% 0.06% EC
97 GARRETT MOTION INC. 366505105 Feb 2026 25,800 -100 $845K +60.3% 0.06% EC
98 SIRIUS XM HOLDINGS INC. 829933100 Feb 2026 27,754 -900 $819K +30.2% 0.06% EC
99 CONSTRUCTION PARTNERS, INC. 21044C107 Feb 2026 7,000 -100 $815K -14.5% 0.06% EC
100 MARA HOLDINGS, INC. 565788106 Feb 2026 55,000 -500 $791K +59.4% 0.06% EC
101 Amer Sports, Inc G0260P102 Feb 2026 21,800 -700 $776K -9.2% 0.06% EC
102 BANK OZK 06417N103 Feb 2026 15,670 -400 $758K +1.3% 0.06% EC
103 HA SUSTAINABLE INFRASTRUCTURE CAPITAL, INC. 41068X100 Feb 2026 18,400 -200 $754K +11.1% 0.06% EC
104 AUTONATION, INC. 05329W102 Feb 2026 3,900 -100 $732K -6.2% 0.06% EC
105 HOME BANCSHARES, INC. 436893200 Feb 2026 27,232 -900 $729K -5.7% 0.06% EC
106 COGENT BIOSCIENCES, INC. 19240Q201 Feb 2026 20,700 -800 $724K -13.4% 0.06% EC
107 GOLAR LNG LIMITED G9456A100 Feb 2026 14,202 -400 $707K +8.8% 0.05% EC
108 SITEONE LANDSCAPE SUPPLY, INC. 82982L103 Feb 2026 6,500 -200 $706K -26.3% 0.05% EC
109 SONOCO PRODUCTS COMPANY 835495102 Feb 2026 14,421 -400 $702K -16.1% 0.05% EC
110 INSTALLED BUILDING PRODUCTS, INC. 45780R101 Feb 2026 3,340 -160 $701K -38.9% 0.05% EC
111 MSC INDUSTRIAL DIRECT CO., INC. 553530106 Feb 2026 6,403 -200 $701K +13.1% 0.05% EC
112 LOUISIANA-PACIFIC CORPORATION 546347105 Feb 2026 9,142 -400 $698K -13.6% 0.05% EC
113 MARKETAXESS HOLDINGS INC. 57060D108 Feb 2026 5,300 -300 $689K -35.9% 0.05% EC
114 FTI CONSULTING, INC. 302941109 Feb 2026 4,368 -200 $669K -10.9% 0.05% EC
115 FRONTDOOR, INC. 35905A109 Feb 2026 10,450 -300 $649K -12.0% 0.05% EC
116 THE BRINK'S COMPANY 109696104 Feb 2026 6,006 -200 $625K -13.8% 0.05% EC
117 MDU RESOURCES GROUP, INC. 552690109 Feb 2026 29,532 -1,000 $623K -1.4% 0.05% EC
118 TEXAS CAPITAL BANCSHARES, INC. 88224Q107 Feb 2026 6,223 -1,100 $619K -11.3% 0.05% EC
119 PVH CORP. 693656100 Feb 2026 6,500 -1,300 $606K +13.3% 0.05% EC
120 RLI CORP. 749607107 Feb 2026 11,764 -600 $589K -23.6% 0.04% EC
121 UNITED COMMUNITY BANKS, INC. 90984P303 Feb 2026 17,418 -700 $574K -1.5% 0.04% EC
122 YETI HOLDINGS, INC. 98585X104 Feb 2026 10,900 -2,400 $523K -10.1% 0.04% EC
123 RINGCENTRAL, INC. 76680R206 Feb 2026 10,500 -3,000 $455K -7.6% 0.03% EC
124 SL GREEN REALTY CORP. 78440X887 Feb 2026 9,983 -400 $453K +18.5% 0.03% EC
125 KNOWLES CORPORATION 49926D109 Feb 2026 11,800 -2,800 $441K +11.3% 0.03% EC
126 CHOICE HOTELS INTERNATIONAL, INC. 169905106 Feb 2026 3,777 -100 $411K +0.7% 0.03% EC
127 CONCENTRA GROUP HOLDINGS PARENT, INC. 20603L102 Feb 2026 16,121 -400 $401K +1.3% 0.03% EC
128 AEHR TEST SYSTEMS 00760J108 Feb 2026 4,100 -1,000 $379K +98.3% 0.03% EC
129 ORUKA THERAPEUTICS, INC. 687604108 Feb 2026 6,400 -400 $375K +60.1% 0.03% EC
130 FOUR CORNERS PROPERTY TRUST, INC. 35086T109 Feb 2026 14,319 -800 $357K -7.6% 0.03% EC
131 Tango Therapeutics Inc 87583X109 Feb 2026 15,200 -3,900 $334K +57.0% 0.03% EC
132 BOK FINANCIAL CORPORATION 05561Q201 Feb 2026 2,482 -900 $318K -25.3% 0.02% EC
133 Edgewise Therapeutics Inc 28036F105 Feb 2026 9,000 -2,900 $307K -15.1% 0.02% EC
134 CREDIT ACCEPTANCE CORPORATION 225310101 Feb 2026 512 -200 $294K -12.8% 0.02% EC
135 ZIFF DAVIS, INC. 48123V102 Feb 2026 4,857 -2,500 $219K +9.9% 0.02% EC
136 Borr Drilling Limited G1466R173 Feb 2026 36,200 -1,400 $181K -21.3% 0.01% EC
137 REX AMERICAN RESOURCES CORPORATION 761624105 Feb 2026 3,400 -200 $159K +24.2% 0.01% EC
138 VESTIS CORPORATION 29430C102 Feb 2026 10,050 -8,200 $130K -9.6% 0.01% EC
139 STAAR SURGICAL COMPANY 852312305 Feb 2026 3,778 -3,600 $113K -23.1% 0.01% EC
140 PURSUIT ATTRACTIONS AND HOSPITALITY, INC. 92552R406 Feb 2026 1,771 -500 $79K +0.4% 0.01% EC
141 FARMERS NATIONAL BANC CORP. 309627107 Feb 2026 4,960 -1,840 $70K -20.0% 0.01% EC
142 SANDRIDGE ENERGY, INC. 80007P869 Feb 2026 1,800 -6,400 $26K -81.6% 0.00% EC
143 Pulse Biosciences Inc 74587B101 Feb 2026 900 -3,600 $22K -73.3% 0.00% EC
144 Aclaris Therapeutics Inc 00461U105 Feb 2026 3,700 -20,400 $17K -75.7% 0.00% EC