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 |
Alphabet (Google) Class C
GOOG
|
+$54.1M |
| 2 |
Apple
AAPL
|
+$28.6M |
| 3 |
Meta Platforms (Facebook)
META
|
+$16.5M |
| 4 |
IBM
IBM
|
+$13.4M |
| 5 |
Baidu
BIDU
|
+$10.3M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$9.89M |
| 2 |
McDonald's
MCD
|
+$8.52M |
| 3 |
Ralph Lauren
RL
|
+$5.22M |
| 4 |
Intel
INTC
|
+$4.74M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
+$4.67M |
Sector Composition
| 1 | Communication Services | 22.01% |
| 2 | Technology | 15.83% |
| 3 | Healthcare | 11.95% |
| 4 | Consumer Discretionary | 9.73% |
| 5 | Financials | 7.98% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
GPOR
676
DELISTED
Gulfport Energy Corp.
GPOR
| $104K | 0.01% |
2,605
+1,242
| +91% | +$49.6K |
|
677
Flowers Foods
FLO
$3.03B
| $103K | 0.01% |
4,881
+3,781
| +344% | +$79.8K |
|
678
Prosperity Bancshares
PB
$6.4B
| $103K | 0.01% |
+1,800
| New | +$103K |
|
679
Financial Select Sector SPDR Fund
XLF
$53.9B
| $103K | 0.01% |
4,845
-3,887
| -45% | -$82.6K |
|
680
Thor Industries
THO
$5.68B
| $102K | 0.01% |
1,813
-2,165
| -54% | -$122K |
|
|
NVRO
681
DELISTED
NEVRO CORP.
NVRO
| $102K | 0.01% |
+1,904
| New | +$102K |
|
|
DCP
682
DELISTED
DCP Midstream, LP
DCP
| $102K | 0.01% |
+3,326
| New | +$102K |
|
|
BKS
683
DELISTED
Barnes & Noble
BKS
| $101K | 0.01% |
5,986
-30,099
| -83% | -$508K |
|
|
KZ
684
DELISTED
KongZhong Corporation
KZ
| $101K | 0.01% |
+13,766
| New | +$101K |
|
685
Adobe
ADBE
$148B
| $100K | 0.01% |
+1,245
| New | +$100K |
|
686
United Therapeutics
UTHR
$18B
| $100K | 0.01% |
578
+301
| +109% | +$52.1K |
|
|
TEN
687
Tsakos Energy Navigation Ltd.
TEN
$651M
| $100K | 0.01% |
2,110
+1,953
| +1,244% | +$92.6K |
|
|
GNC
688
DELISTED
GNC Holdings, Inc.
GNC
| $100K | 0.01% |
+2,263
| New | +$100K |
|
689
Petrobras
PBR
$81.8B
| $99K | 0.01% |
+11,000
| New | +$99K |
|
690
Range Resources
RRC
$8.27B
| $99K | 0.01% |
2,022
-8,739
| -81% | -$428K |
|
691
Automatic Data Processing
ADP
$118B
| $98K | 0.01% |
1,224
-1,383
| -53% | -$111K |
|
|
NXTM
692
DELISTED
NxStage Medical Inc.
NXTM
| $98K | 0.01% |
6,922
+3,970
| +134% | +$56.2K |
|
|
OA
693
DELISTED
Orbital ATK, Inc.
OA
| $98K | 0.01% |
1,349
-3,651
| -73% | -$265K |
|
694
iShares Core US Aggregate Bond ETF
AGG
$132B
| $97K | 0.01% |
+896
| New | +$97K |
|
|
RSPP
695
DELISTED
RSP Permian, Inc.
RSPP
| $97K | 0.01% |
3,467
+616
| +22% | +$17.2K |
|
696
NNN REIT
NNN
$8.07B
| $96K | 0.01% |
2,746
+2,005
| +271% | +$70.1K |
|
697
Dillards
DDS
$8.87B
| $95K | 0.01% |
910
-376
| -29% | -$39.3K |
|
698
Zebra Technologies
ZBRA
$15.7B
| $95K | 0.01% |
+863
| New | +$95K |
|
|
EEP
699
DELISTED
Enbridge Energy Partners
EEP
| $95K | 0.01% |
2,852
-325
| -10% | -$10.8K |
|
700
Bloomin' Brands
BLMN
$578M
| $94K | 0.01% |
4,444
+2,655
| +148% | +$56.2K |
|