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 |
Amazon
AMZN
|
+$144M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$68.7M |
| 3 |
AT&T
T
|
+$45.5M |
| 4 |
Meta Platforms (Facebook)
META
|
+$38M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$35.4M |
Top Sells
| 1 |
Microsoft
MSFT
|
+$94.2M |
| 2 |
Citigroup
C
|
+$62.3M |
| 3 |
JPMorgan Chase
JPM
|
+$56.2M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.8M |
| 5 |
SPDR Gold Trust
GLD
|
+$44.4M |
Sector Composition
| 1 | Consumer Discretionary | 16.85% |
| 2 | Technology | 15.5% |
| 3 | Communication Services | 10.53% |
| 4 | Healthcare | 8.8% |
| 5 | Consumer Staples | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
551
Dow Inc
DOW
$16.9B
| $417K | ﹤0.01% |
8,280
-185,755
| -96% | -$9.36M |
|
552
Magnite
MGNI
$3.4B
| $417K | ﹤0.01% |
+39,428
| New | +$417K |
|
553
Sprout Social
SPT
$816M
| $417K | ﹤0.01% |
7,397
-1,025
| -12% | -$57.8K |
|
554
Capri Holdings
CPRI
$2.54B
| $411K | ﹤0.01% |
+7,172
| New | +$411K |
|
555
Sprouts Farmers Market
SFM
$13.1B
| $411K | ﹤0.01% |
+12,709
| New | +$411K |
|
|
ARR
556
Armour Residential REIT
ARR
$1.74B
| $410K | ﹤0.01% |
14,596
-3,071
| -17% | -$86.3K |
|
557
Toyota
TM
$257B
| $410K | ﹤0.01% |
3,006
-475
| -14% | -$64.8K |
|
|
EBIX
558
DELISTED
Ebix Inc
EBIX
| $409K | ﹤0.01% |
20,518
-61,240
| -75% | -$1.22M |
|
559
Markel Group
MKL
$24.3B
| $405K | ﹤0.01% |
+308
| New | +$405K |
|
560
iShares S&P GSCI Commodity-Indexed Trust
GSG
$1B
| $403K | ﹤0.01% |
19,025
+9,318
| +96% | +$197K |
|
561
Banco Bradesco
BBD
$33B
| $401K | ﹤0.01% |
139,297
-138,473
| -50% | -$399K |
|
562
CyberArk
CYBR
$23.6B
| $399K | ﹤0.01% |
3,083
-3,093
| -50% | -$400K |
|
|
RENT
563
Rent the Runway
RENT
$25M
| $397K | ﹤0.01% |
6,514
+5,498
| +541% | +$335K |
|
564
Cracker Barrel
CBRL
$1.09B
| $396K | ﹤0.01% |
+4,187
| New | +$396K |
|
565
Kinross Gold
KGC
$28B
| $395K | ﹤0.01% |
96,683
-115,621
| -54% | -$472K |
|
|
ETRN
566
DELISTED
Equitrans Midstream Corporation Common Stock
ETRN
| $395K | ﹤0.01% |
59,027
-4,138
| -7% | -$27.7K |
|
567
Envista
NVST
$3.45B
| $394K | ﹤0.01% |
+11,705
| New | +$394K |
|
568
InterDigital
IDCC
$7.7B
| $393K | ﹤0.01% |
7,948
+6,093
| +328% | +$301K |
|
569
Ramaco Resources Class A
METC
$1.72B
| $390K | ﹤0.01% |
45,874
+45,124
| +6,017% | +$384K |
|
570
iShares MSCI South Korea ETF
EWY
$5.38B
| $389K | ﹤0.01% |
6,895
-19,923
| -74% | -$1.12M |
|
571
GXO Logistics
GXO
$5.76B
| $389K | ﹤0.01% |
9,127
-13,362
| -59% | -$569K |
|
572
Netflix
NFLX
$530B
| $389K | ﹤0.01% |
1,320
| – | – |
|
573
iShares S&P 100 ETF
OEF
$22.4B
| $385K | ﹤0.01% |
2,261
+879
| +64% | +$150K |
|
574
SS&C Technologies
SSNC
$21.6B
| $385K | ﹤0.01% |
7,397
-45,963
| -86% | -$2.39M |
|
575
Manitowoc
MTW
$357M
| $384K | ﹤0.01% |
41,933
+41,516
| +9,956% | +$380K |
|