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 |
Invesco QQQ Trust
QQQ
|
$92M |
| 2 |
Walt Disney
DIS
|
$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$12.8M |
| 4 |
Baidu
BIDU
|
$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
$61.4M |
| 2 |
Amazon
AMZN
|
$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$35.5M |
| 4 |
Apple
AAPL
|
$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.02% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
301
Innovative Industrial Properties
IIPR
$1.61B
| $740K | ﹤0.01% |
+9,070
| New | +$740K |
|
|
FTCH
302
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $736K | ﹤0.01% |
+27,385
| New | +$736K |
|
303
Radware
RDWR
$1.07B
| $725K | ﹤0.01% |
27,775
-5,106
| -16% | -$133K |
|
304
The Mosaic Company
MOS
$10.3B
| $722K | ﹤0.01% |
26,444
+5,826
| +28% | +$159K |
|
305
Chegg
CHGG
$185M
| $721K | ﹤0.01% |
18,934
+13,278
| +235% | +$506K |
|
306
Citizens Financial Group
CFG
$22.3B
| $714K | ﹤0.01% |
21,999
-18,892
| -46% | -$613K |
|
307
Conduent
CNDT
$447M
| $712K | ﹤0.01% |
51,535
+25,002
| +94% | +$345K |
|
308
ProShares Short VIX Short-Term Futures ETF
SVXY
$250M
| $708K | ﹤0.01% |
27,074
+4,442
| +20% | +$116K |
|
|
TSG
309
DELISTED
The Stars Group Inc.
TSG
| $704K | ﹤0.01% |
40,247
+27,425
| +214% | +$480K |
|
310
Unum
UNM
$12.6B
| $701K | ﹤0.01% |
+20,737
| New | +$701K |
|
|
APU
311
DELISTED
AmeriGas Partners, L.P.
APU
| $701K | ﹤0.01% |
22,726
+21,117
| +1,312% | +$651K |
|
312
Dollar General
DG
$24.1B
| $700K | ﹤0.01% |
+5,872
| New | +$700K |
|
313
Elastic
ESTC
$9.21B
| $688K | ﹤0.01% |
+8,620
| New | +$688K |
|
|
SRCL
314
DELISTED
Stericycle Inc
SRCL
| $686K | ﹤0.01% |
12,617
+12,394
| +5,558% | +$674K |
|
|
SCWX
315
DELISTED
SecureWorks Corp Class A Common Stock
SCWX
| $685K | ﹤0.01% |
37,280
+36,924
| +10,372% | +$678K |
|
316
Etsy
ETSY
$5.36B
| $684K | ﹤0.01% |
10,189
+1,452
| +17% | +$97.5K |
|
|
PTLA
317
DELISTED
Portola Pharmaceuticals, Inc.
PTLA
| $683K | ﹤0.01% |
+19,710
| New | +$683K |
|
318
Bloom Energy
BE
$13.4B
| $680K | ﹤0.01% |
52,685
+49,636
| +1,628% | +$641K |
|
319
Direxion Daily CSI 300 China A Share Bull 2X Shares
CHAU
$163M
| $678K | ﹤0.01% |
28,197
+24,629
| +690% | +$592K |
|
|
WAGE
320
DELISTED
WageWorks, Inc.
WAGE
| $677K | ﹤0.01% |
17,943
+16,327
| +1,010% | +$616K |
|
321
A10 Networks
ATEN
$1.27B
| $674K | ﹤0.01% |
95,087
+11,365
| +14% | +$80.6K |
|
322
RLJ Lodging Trust
RLJ
$1.18B
| $669K | ﹤0.01% |
38,123
-19,586
| -34% | -$344K |
|
|
AMED
323
DELISTED
Amedisys
AMED
| $668K | ﹤0.01% |
+5,423
| New | +$668K |
|
324
Domo
DOMO
$588M
| $666K | ﹤0.01% |
16,528
+10,664
| +182% | +$430K |
|
325
Bunge Global
BG
$16.9B
| $664K | ﹤0.01% |
12,530
-31,708
| -72% | -$1.68M |
|