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 |
Goldman Sachs
GS
|
+$38.4M |
| 2 |
Micron Technology
MU
|
+$23.7M |
| 3 |
NVIDIA
NVDA
|
+$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Top Sells
| 1 |
Citigroup
C
|
+$21.6M |
| 2 |
Apple
AAPL
|
+$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$13.3M |
| 4 |
Eli Lilly
LLY
|
+$9.69M |
| 5 |
Mastercard
MA
|
+$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
576
Teleflex
TFX
$5.56B
| $319K | 0.01% |
1,650
-2,354
| -59% | -$455K |
|
577
Veeva Systems
VEEV
$45.7B
| $319K | 0.01% |
+6,235
| New | +$319K |
|
|
CONE
578
DELISTED
CyrusOne Inc Common Stock
CONE
| $318K | 0.01% |
6,188
-3,481
| -36% | -$179K |
|
579
Eagle Materials
EXP
$7.67B
| $317K | 0.01% |
+3,266
| New | +$317K |
|
580
SPDR Euro Stoxx 50 ETF
FEZ
$4.66B
| $317K | 0.01% |
8,728
-44,193
| -84% | -$1.61M |
|
581
Invesco CurrencyShares Canadian Dollar Trust
FXC
$92.1M
| $317K | 0.01% |
4,279
+2,280
| +114% | +$169K |
|
582
PetMed Express
PETS
$57.8M
| $315K | 0.01% |
+15,664
| New | +$315K |
|
|
NVTA
583
DELISTED
Invitae Corporation
NVTA
| $314K | 0.01% |
28,409
-4,522
| -14% | -$50K |
|
584
Albemarle
ALB
$9.52B
| $313K | 0.01% |
+2,969
| New | +$313K |
|
|
ARR
585
Armour Residential REIT
ARR
$1.66B
| $312K | 0.01% |
2,751
+1,922
| +232% | +$218K |
|
586
Mercury Systems
MRCY
$4.63B
| $312K | 0.01% |
8,013
+6,470
| +419% | +$252K |
|
|
PSXP
587
DELISTED
PHILLIPS 66 PARTNERS LP
PSXP
| $309K | 0.01% |
6,036
+4,479
| +288% | +$229K |
|
588
Transocean
RIG
$3.26B
| $305K | 0.01% |
+24,542
| New | +$305K |
|
589
Potbelly
PBPB
$515M
| $304K | 0.01% |
21,872
+21,072
| +2,634% | +$293K |
|
|
UFS
590
DELISTED
DOMTAR CORPORATION (New)
UFS
| $299K | 0.01% |
+8,198
| New | +$299K |
|
591
Franco-Nevada
FNV
$39B
| $298K | 0.01% |
4,555
-18,867
| -81% | -$1.23M |
|
|
ALR
592
DELISTED
Alere Inc
ALR
| $298K | 0.01% |
7,525
-22,675
| -75% | -$898K |
|
593
Medical Properties Trust
MPW
$3.03B
| $297K | 0.01% |
+23,064
| New | +$297K |
|
|
AFTY
594
DELISTED
Pacer CSOP FTSE China A50 ETF
AFTY
| $297K | 0.01% |
+21,473
| New | +$297K |
|
|
CVRR
595
DELISTED
CVR Refining, LP
CVRR
| $297K | 0.01% |
31,492
+10,146
| +48% | +$95.7K |
|
|
AMRN
596
Amarin Corp
AMRN
$309M
| $296K | 0.01% |
+4,627
| New | +$296K |
|
597
Huntington Bancshares
HBAN
$26.1B
| $296K | 0.01% |
22,126
+10,651
| +93% | +$142K |
|
598
XBiotech
XBIT
$84.1M
| $295K | 0.01% |
+17,941
| New | +$295K |
|
599
Qiagen
QGEN
$9.92B
| $294K | 0.01% |
+9,599
| New | +$294K |
|
600
Grupo Aeroportuario del Sureste
ASR
$10.1B
| $293K | 0.01% |
+1,696
| New | +$293K |
|