Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Apple
AAPL
|
+$45.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$33.2M |
| 5 |
Citigroup
C
|
+$32.7M |
Top Sells
| 1 |
Amazon
AMZN
|
+$164M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$111M |
| 3 |
NVIDIA
NVDA
|
+$77.7M |
| 4 |
Meta Platforms (Facebook)
META
|
+$60.9M |
| 5 |
Procter & Gamble
PG
|
+$38.8M |
Sector Composition
| 1 | Technology | 21.73% |
| 2 | Consumer Discretionary | 10.23% |
| 3 | Healthcare | 8.76% |
| 4 | Industrials | 7.59% |
| 5 | Communication Services | 6.56% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
951
BrightView Holdings
BV
$1.34B
| $122K | ﹤0.01% |
21,865
+21,757
| +20,145% | +$121K |
|
952
iShares MSCI Malaysia ETF
EWM
$242M
| $122K | ﹤0.01% |
+5,508
| New | +$122K |
|
953
SPDR Portfolio Long Term Treasury ETF
SPTL
$11.8B
| $122K | ﹤0.01% |
3,975
+1,298
| +48% | +$39.8K |
|
954
Vanguard Mega Cap Growth ETF
MGK
$29.6B
| $121K | ﹤0.01% |
+595
| New | +$121K |
|
955
Boise Cascade
BCC
$3.31B
| $120K | ﹤0.01% |
+1,913
| New | +$120K |
|
|
HOLI
956
DELISTED
Hollsys Automation Technologies INTERNATIONAL, LTD. COMMON (British Virgin Island)
HOLI
| $120K | ﹤0.01% |
6,956
+790
| +13% | +$13.6K |
|
|
SCU
957
DELISTED
Sculptor Capital Management, Inc. Class A Common Stock
SCU
| $120K | ﹤0.01% |
13,949
+3,067
| +28% | +$26.4K |
|
958
Kingsway Financial Services
KFS
$414M
| $117K | ﹤0.01% |
+13,286
| New | +$117K |
|
959
Old Dominion Freight Line
ODFL
$31.3B
| $117K | ﹤0.01% |
+690
| New | +$117K |
|
960
Expro
XPRO
$1.44B
| $117K | ﹤0.01% |
6,385
+5,992
| +1,525% | +$110K |
|
961
Liberty Broadband Class C
LBRDK
$8.71B
| $116K | ﹤0.01% |
1,422
-40
| -3% | -$3.26K |
|
962
Titan Machinery
TITN
$470M
| $116K | ﹤0.01% |
+3,816
| New | +$116K |
|
|
JOAN
963
DELISTED
JOANN, Inc. Common Stock
JOAN
| $116K | ﹤0.01% |
72,967
+10,516
| +17% | +$16.7K |
|
964
Genco Shipping & Trading
GNK
$749M
| $115K | ﹤0.01% |
7,366
-45,641
| -86% | -$713K |
|
965
Arbe Robotics
ARBE
$148M
| $114K | ﹤0.01% |
36,032
+35,793
| +14,976% | +$113K |
|
966
Stride
LRN
$7B
| $114K | ﹤0.01% |
2,928
-4,250
| -59% | -$165K |
|
967
Denison Mines
DNN
$2.22B
| $113K | ﹤0.01% |
103,897
-206,126
| -66% | -$224K |
|
968
STAG Industrial
STAG
$6.75B
| $113K | ﹤0.01% |
+3,352
| New | +$113K |
|
969
IHS Holding
IHS
$2.44B
| $112K | ﹤0.01% |
12,820
+2,419
| +23% | +$21.1K |
|
970
Taboola.com
TBLA
$1.01B
| $112K | ﹤0.01% |
41,344
-7,566
| -15% | -$20.5K |
|
971
IAMGOLD
IAG
$6.29B
| $111K | ﹤0.01% |
41,065
-28,019
| -41% | -$75.7K |
|
972
ProShares Short Real Estate
REK
$11.3M
| $111K | ﹤0.01% |
5,559
-9,504
| -63% | -$190K |
|
973
Lexicon Pharmaceuticals
LXRX
$403M
| $110K | ﹤0.01% |
45,624
+28,416
| +165% | +$68.5K |
|
974
SLM Corp
SLM
$6.05B
| $110K | ﹤0.01% |
8,905
-27,231
| -75% | -$336K |
|
|
BLDP
975
Ballard Power Systems
BLDP
$625M
| $109K | ﹤0.01% |
19,609
-41,091
| -68% | -$228K |
|