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 | |
|---|---|---|---|---|---|---|
501
E.W. Scripps
SSP
$257M
| $411K | 0.02% |
17,561
+17,036
| +3,245% | +$399K |
|
502
Trinseo
TSE
$94.2M
| $410K | 0.02% |
6,114
-7,271
| -54% | -$488K |
|
503
Globus Medical
GMED
$7.66B
| $409K | 0.02% |
13,832
-5,583
| -29% | -$165K |
|
504
Broadwind
BWEN
$48.8M
| $408K | 0.02% |
+49,021
| New | +$408K |
|
505
Brinker International
EAT
$6.18B
| $406K | 0.02% |
9,251
-3,962
| -30% | -$174K |
|
506
Tractor Supply
TSCO
$31.7B
| $404K | 0.02% |
29,320
+26,495
| +938% | +$365K |
|
507
Interactive Brokers
IBKR
$28.9B
| $403K | 0.02% |
46,532
+35,168
| +309% | +$305K |
|
508
Quanta Services
PWR
$58.2B
| $399K | 0.02% |
10,754
-654
| -6% | -$24.3K |
|
509
Royal Bank of Canada
RY
$206B
| $399K | 0.02% |
+5,473
| New | +$399K |
|
510
Match Group
MTCH
$9.28B
| $398K | 0.02% |
24,432
-464
| -2% | -$7.56K |
|
511
Dave & Buster's
PLAY
$705M
| $398K | 0.02% |
6,516
+2,494
| +62% | +$152K |
|
512
Lazard
LAZ
$5.4B
| $397K | 0.02% |
+8,639
| New | +$397K |
|
|
CAVM
513
DELISTED
Cavium, Inc.
CAVM
| $393K | 0.02% |
+5,488
| New | +$393K |
|
514
iShares MSCI United Kingdom ETF
EWU
$2.84B
| $392K | 0.02% |
12,062
-25,832
| -68% | -$840K |
|
|
CAMP
515
DELISTED
CalAmp Corp.
CAMP
| $392K | 0.02% |
1,015
-20
| -2% | -$7.72K |
|
|
CY
516
DELISTED
Cypress Semiconductor
CY
| $390K | 0.02% |
28,368
+19,717
| +228% | +$271K |
|
|
LKM
517
DELISTED
Link Motion Inc.
LKM
| $388K | 0.02% |
+93,251
| New | +$388K |
|
518
Cullen/Frost Bankers
CFR
$8.28B
| $387K | 0.02% |
+4,357
| New | +$387K |
|
|
MZOR
519
DELISTED
Mazor Robotics Ltd.
MZOR
| $387K | 0.02% |
13,013
+12,476
| +2,323% | +$371K |
|
|
NXGN
520
DELISTED
NextGen Healthcare, Inc. Common Stock
NXGN
| $385K | 0.02% |
25,299
+11,361
| +82% | +$173K |
|
|
SGYP
521
DELISTED
Synergy Pharmaceuticals, Inc Common Stock
SGYP
| $384K | 0.02% |
82,495
+12,766
| +18% | +$59.4K |
|
522
DexCom
DXCM
$29.7B
| $383K | 0.02% |
18,124
+6,988
| +63% | +$148K |
|
|
AERI
523
DELISTED
Aerie Pharmaceuticals, Inc.
AERI
| $383K | 0.02% |
8,466
+1,169
| +16% | +$52.9K |
|
524
Technology Select Sector SPDR Fund
XLK
$88.3B
| $382K | 0.02% |
+7,168
| New | +$382K |
|
|
OIL
525
DELISTED
Barclays Bank PLC iPath Exchange Traded Notes Linked to Goldman Sachs Crude Oil Total Return In
OIL
| $382K | 0.02% |
68,460
+56,658
| +480% | +$316K |
|