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
|
+$186M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$86.2M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 4 |
iShares Silver Trust
SLV
|
+$42.9M |
| 5 |
Advanced Micro Devices
AMD
|
+$36.5M |
Top Sells
| 1 |
Occidental Petroleum
OXY
|
+$44.4M |
| 2 |
Financial Select Sector SPDR Fund
XLF
|
+$42.8M |
| 3 |
Verizon
VZ
|
+$40.8M |
| 4 |
Direxion Daily S&P 500 Bull 3x Shares
SPXL
|
+$33.6M |
| 5 |
iShares China Large-Cap ETF
FXI
|
+$33M |
Sector Composition
| 1 | Technology | 23.31% |
| 2 | Consumer Discretionary | 13.02% |
| 3 | Industrials | 8.23% |
| 4 | Healthcare | 7.47% |
| 5 | Financials | 6.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
951
Equinix
EQIX
$76.4B
| $278K | ﹤0.01% |
+376
| New | +$278K |
|
952
Interactive Brokers
IBKR
$27.8B
| $278K | ﹤0.01% |
16,896
+3,696
| +28% | +$60.8K |
|
953
Sandstorm Gold
SAND
$3.4B
| $277K | ﹤0.01% |
34,349
+9,022
| +36% | +$72.8K |
|
954
Eos Energy Enterprises
EOSE
$1.92B
| $276K | ﹤0.01% |
66,084
+65,742
| +19,223% | +$275K |
|
955
Molina Healthcare
MOH
$9.71B
| $276K | ﹤0.01% |
828
-186
| -18% | -$62K |
|
956
The Mosaic Company
MOS
$10.6B
| $276K | ﹤0.01% |
4,163
+1,459
| +54% | +$96.7K |
|
957
Invitation Homes
INVH
$18.4B
| $275K | ﹤0.01% |
+6,864
| New | +$275K |
|
958
Alkermes
ALKS
$4.45B
| $274K | ﹤0.01% |
+10,449
| New | +$274K |
|
959
Yum China
YUMC
$16.2B
| $274K | ﹤0.01% |
+6,601
| New | +$274K |
|
|
GAN
960
DELISTED
GAN Ltd
GAN
| $272K | ﹤0.01% |
56,521
+34,065
| +152% | +$164K |
|
961
NeoGenomics
NEO
$966M
| $272K | ﹤0.01% |
22,441
+17,163
| +325% | +$208K |
|
962
Sprouts Farmers Market
SFM
$13.1B
| $272K | ﹤0.01% |
8,524
+872
| +11% | +$27.8K |
|
963
Butterfly Network
BFLY
$378M
| $271K | ﹤0.01% |
57,107
+33,604
| +143% | +$159K |
|
964
ProShares UltraShort FTSE Europe
EPV
$16.1M
| $271K | ﹤0.01% |
4,373
-241
| -5% | -$14.9K |
|
965
Viasat
VSAT
$3.91B
| $269K | ﹤0.01% |
5,532
-9,735
| -64% | -$473K |
|
|
FLG
966
Flagstar Financial, Inc.
FLG
$5.24B
| $269K | ﹤0.01% |
8,395
+3,883
| +86% | +$124K |
|
967
Ardelyx
ARDX
$1.6B
| $268K | ﹤0.01% |
250,592
+44,928
| +22% | +$48K |
|
968
Melco Resorts & Entertainment
MLCO
$3.8B
| $267K | ﹤0.01% |
+35,054
| New | +$267K |
|
969
Zymeworks
ZYME
$1.15B
| $267K | ﹤0.01% |
+40,844
| New | +$267K |
|
970
Newegg Commerce
NEGG
$735M
| $266K | ﹤0.01% |
2,106
+2,096
| +20,960% | +$265K |
|
971
Liberty Broadband Class C
LBRDK
$8.67B
| $265K | ﹤0.01% |
1,964
-7,230
| -79% | -$976K |
|
972
Group 1 Automotive
GPI
$6.09B
| $263K | ﹤0.01% |
1,570
+1,357
| +637% | +$227K |
|
973
Adecoagro
AGRO
$816M
| $262K | ﹤0.01% |
21,713
+16,410
| +309% | +$198K |
|
974
Cannae Holdings
CNNE
$1.1B
| $262K | ﹤0.01% |
+10,968
| New | +$262K |
|
975
Glimpse Group
VRAR
$31M
| $261K | ﹤0.01% |
+40,848
| New | +$261K |
|