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 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$32.1M |
| 2 |
PARA
Paramount Global Class B
PARA
|
$23.3M |
| 3 |
Pinduoduo
PDD
|
$17.3M |
| 4 |
Pfizer
PFE
|
$16.8M |
| 5 |
American Airlines Group
AAL
|
$14.5M |
Top Sells
| 1 |
Amazon
AMZN
|
$64.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
$38.1M |
| 3 |
AutoZone
AZO
|
$32.2M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$25.3M |
| 5 |
Apple
AAPL
|
$22.5M |
Sector Composition
| 1 | Technology | 20.25% |
| 2 | Consumer Discretionary | 15.22% |
| 3 | Healthcare | 10.03% |
| 4 | Financials | 9.2% |
| 5 | Industrials | 9.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
501
WisdomTree Japan Hedged Equity Fund
DXJ
$3.78B
| $790K | ﹤0.01% |
12,894
+7,732
| +150% | +$474K |
|
502
Zions Bancorporation
ZION
$8.34B
| $789K | ﹤0.01% |
+14,368
| New | +$789K |
|
503
Restaurant Brands International
QSR
$20.7B
| $788K | ﹤0.01% |
12,127
-14,239
| -54% | -$925K |
|
504
Digital Realty Trust
DLR
$55.7B
| $786K | ﹤0.01% |
5,585
-9,442
| -63% | -$1.33M |
|
|
SDC
505
DELISTED
SmileDirectClub, Inc. Class A Common Stock
SDC
| $786K | ﹤0.01% |
76,246
-5,929
| -7% | -$61.1K |
|
506
Stride
LRN
$7.01B
| $780K | ﹤0.01% |
25,934
-4,541
| -15% | -$137K |
|
|
POTX
507
DELISTED
Global X Cannabis ETF
POTX
| $778K | ﹤0.01% |
8,087
+7,817
| +2,895% | +$752K |
|
508
Invesco Mortgage Capital
IVR
$529M
| $777K | ﹤0.01% |
19,377
+7,547
| +64% | +$303K |
|
509
Kimbell Royalty Partners
KRP
$1.25B
| $776K | ﹤0.01% |
76,614
+73,982
| +2,811% | +$749K |
|
|
SRG
510
Seritage Growth Properties
SRG
$211M
| $774K | ﹤0.01% |
42,192
+13,289
| +46% | +$244K |
|
511
Interactive Brokers
IBKR
$26.8B
| $773K | ﹤0.01% |
+42,340
| New | +$773K |
|
|
MGI
512
DELISTED
MoneyGram International, Inc. New
MGI
| $773K | ﹤0.01% |
+117,695
| New | +$773K |
|
513
ICU Medical
ICUI
$3.24B
| $770K | ﹤0.01% |
3,751
-3,989
| -52% | -$819K |
|
|
RWT
514
Redwood Trust
RWT
$823M
| $768K | ﹤0.01% |
73,810
+41,187
| +126% | +$429K |
|
|
TRVG
515
trivago
TRVG
$235M
| $767K | ﹤0.01% |
35,675
+29,497
| +477% | +$634K |
|
516
Asana
ASAN
$3.18B
| $763K | ﹤0.01% |
26,698
-40,000
| -60% | -$1.14M |
|
|
BNFT
517
DELISTED
Benefitfocus, Inc.
BNFT
| $763K | ﹤0.01% |
55,278
+46,581
| +536% | +$643K |
|
518
Varonis Systems
VRNS
$6.28B
| $762K | ﹤0.01% |
14,854
-30,080
| -67% | -$1.54M |
|
519
KBR
KBR
$6.4B
| $761K | ﹤0.01% |
19,843
+10,238
| +107% | +$393K |
|
520
Global X Silver Miners ETF NEW
SIL
$2.92B
| $759K | ﹤0.01% |
19,034
-28,149
| -60% | -$1.12M |
|
521
EchoStar
SATS
$19.3B
| $749K | ﹤0.01% |
31,213
+19,075
| +157% | +$458K |
|
522
DHT Holdings
DHT
$2B
| $746K | ﹤0.01% |
125,842
+107,069
| +570% | +$635K |
|
523
Perrigo
PRGO
$3.12B
| $746K | ﹤0.01% |
18,442
+4,224
| +30% | +$171K |
|
524
Rekor Systems
REKR
$138M
| $746K | ﹤0.01% |
37,360
+17,999
| +93% | +$359K |
|
525
ProShares Ultra Technology
ROM
$770M
| $743K | ﹤0.01% |
19,804
+3,652
| +23% | +$137K |
|