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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
726
CorMedix
CRMD
$836M
| $405K | ﹤0.01% |
95,540
+66,354
| +227% | +$281K |
|
727
Newell Brands
NWL
$2.32B
| $404K | ﹤0.01% |
50,373
+22,854
| +83% | +$183K |
|
728
iShares MSCI Hong Kong ETF
EWH
$721M
| $403K | ﹤0.01% |
25,959
-20,423
| -44% | -$317K |
|
729
C4 Therapeutics
CCCC
$225M
| $402K | ﹤0.01% |
49,269
-45,751
| -48% | -$373K |
|
730
AB InBev
BUD
$116B
| $395K | ﹤0.01% |
+6,508
| New | +$395K |
|
731
iShares MSCI China Small-Cap ETF
ECNS
$111M
| $394K | ﹤0.01% |
+16,479
| New | +$394K |
|
732
Interpublic Group of Companies
IPG
$9.39B
| $394K | ﹤0.01% |
12,080
-40,417
| -77% | -$1.32M |
|
733
Comfort Systems
FIX
$28.1B
| $393K | ﹤0.01% |
+1,237
| New | +$393K |
|
|
HRT
734
DELISTED
HireRight Holdings Corporation
HRT
| $391K | ﹤0.01% |
27,419
-28,187
| -51% | -$402K |
|
735
Allison Transmission
ALSN
$7.38B
| $389K | ﹤0.01% |
4,801
-5,541
| -54% | -$449K |
|
736
iShares MSCI South Korea ETF
EWY
$5.62B
| $389K | ﹤0.01% |
+5,800
| New | +$389K |
|
737
Loews
L
$20.1B
| $387K | ﹤0.01% |
4,952
-1,179
| -19% | -$92.1K |
|
738
RPC Inc
RES
$995M
| $387K | ﹤0.01% |
50,088
+26,115
| +109% | +$202K |
|
739
Principal Financial Group
PFG
$18.2B
| $386K | ﹤0.01% |
+4,477
| New | +$386K |
|
|
PXD
740
DELISTED
Pioneer Natural Resource Co.
PXD
| $386K | ﹤0.01% |
1,472
-4,168
| -74% | -$1.09M |
|
741
AGCO
AGCO
$8.18B
| $384K | ﹤0.01% |
3,123
-5,032
| -62% | -$619K |
|
|
NARI
742
DELISTED
Inari Medical, Inc. Common Stock
NARI
| $384K | ﹤0.01% |
+8,019
| New | +$384K |
|
743
Ollie's Bargain Outlet
OLLI
$8.43B
| $383K | ﹤0.01% |
+4,821
| New | +$383K |
|
744
Sprott Junior Uranium Miners ETF
URNJ
$389M
| $380K | ﹤0.01% |
14,956
-56,156
| -79% | -$1.43M |
|
745
American Coastal Insurance
ACIC
$546M
| $378K | ﹤0.01% |
35,442
+13,410
| +61% | +$143K |
|
|
CRON
746
Cronos Group
CRON
$1B
| $378K | ﹤0.01% |
144,921
-56,900
| -28% | -$148K |
|
747
iShares Core S&P Small-Cap ETF
IJR
$86.1B
| $378K | ﹤0.01% |
+3,422
| New | +$378K |
|
748
Tennant Co
TNC
$1.49B
| $378K | ﹤0.01% |
+3,111
| New | +$378K |
|
749
NuScale Power
SMR
$6.26B
| $375K | ﹤0.01% |
70,733
+68,983
| +3,942% | +$366K |
|
|
X
750
DELISTED
US Steel
X
| $375K | ﹤0.01% |
+9,214
| New | +$375K |
|