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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alibaba
BABA
|
+$50.3M |
| 2 |
Boeing
BA
|
+$24.3M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.3M |
| 4 |
Biogen
BIIB
|
+$15.9M |
| 5 |
FedEx
FDX
|
+$15.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$60.3M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Netflix
NFLX
|
+$19M |
| 4 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$17.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.49% |
| 2 | Technology | 0.48% |
| 3 | Healthcare | 0.35% |
| 4 | Industrials | 0.35% |
| 5 | Communication Services | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
DCP
1351
PUT
DELISTED
DCP Midstream, LP
DCP
| $1.97M | 0.01% |
753
+702
| +1,376% | +$19.1K |
|
1352
CALL
PVH
PVH
$3.71B
| $1.97M | 0.01% |
223
+115
| +106% | +$9.61K |
|
1353
PUT
Sysco
SYY
$39.7B
| $1.96M | 0.01% |
247
+184
| +292% | +$13.5K |
|
1354
CALL
Exelixis
EXEL
$13.9B
| $1.96M | 0.01% |
1,108
-574
| -34% | -$11.6K |
|
1355
PUT
Copa Holdings
CPA
$5.56B
| $1.96M | 0.01% |
198
+174
| +725% | +$17.5K |
|
1356
Wendy's
WEN
$1.33B
| $1.95M | 0.01% |
97,622
+96,268
| +7,110% | +$1.92M |
|
1357
PUT
C.H. Robinson
CHRW
$22B
| $1.95M | 0.01% |
230
+81
| +54% | +$6.81K |
|
1358
CALL
OSI Systems
OSIS
$3.57B
| $1.95M | 0.01% |
192
-110
| -36% | -$11.9K |
|
1359
PUT
Becton Dickinson
BDX
$43.1B
| $1.95M | 0.01% |
79
-84
| -52% | -$20.7K |
|
1360
PUT
Five Below
FIVE
$11.2B
| $1.94M | 0.01% |
154
-203
| -57% | -$24.7K |
|
1361
PUT
Dow Inc
DOW
$21.6B
| $1.93M | 0.01% |
406
+224
| +123% | +$10.5K |
|
|
CIT
1362
PUT
DELISTED
CIT Group Inc.
CIT
| $1.93M | 0.01% |
426
+90
| +27% | +$4.2K |
|
1363
CALL
Jazz Pharmaceuticals
JAZZ
$15.9B
| $1.92M | 0.01% |
150
+13
| +9% | +$1.74K |
|
1364
PUT
Yelp
YELP
$1.38B
| $1.92M | 0.01% |
553
-274
| -33% | -$9.47K |
|
|
SAFM
1365
CALL
DELISTED
Sanderson Farms Inc
SAFM
| $1.92M | 0.01% |
127
+31
| +32% | +$4.42K |
|
1366
PUT
Crocs
CROX
$6.69B
| $1.92M | 0.01% |
692
+292
| +73% | +$7.07K |
|
|
EBIX
1367
PUT
DELISTED
Ebix Inc
EBIX
| $1.92M | 0.01% |
456
+5
| +1% | +$210 |
|
1368
PUT
British American Tobacco
BTI
$132B
| $1.92M | 0.01% |
520
+71
| +16% | +$2.6K |
|
1369
CALL
Macy's
M
$6.15B
| $1.91M | 0.01% |
1,232
-236
| -16% | -$4.37K |
|
|
SCIU
1370
CALL
DELISTED
Global X Scientific Beta US ETF
SCIU
| $1.91M | 0.01% |
776
+441
| +132% | +$14.6K |
|
1371
Walt Disney
DIS
$165B
| $1.91M | 0.01% |
14,676
-21,021
| -59% | -$2.91M |
|
1372
CALL
Digital Realty Trust
DLR
$73.7B
| $1.91M | 0.01% |
147
+109
| +287% | +$13.3K |
|
|
BRSL
1373
CALL
Brightstar Lottery PLC
BRSL
$1.91B
| $1.91M | 0.01% |
1,343
+889
| +196% | +$11.8K |
|
1374
PUT
Amplify Junior Silver Miners ETF
SILJ
$3.27B
| $1.9M | 0.01% |
1,065
+634
| +147% | +$6.34K |
|
1375
IBM
IBM
$202B
| $1.9M | 0.01% |
13,650
-12,327
| -47% | -$1.66M |
|
Similar funds
Simplex Trading's Q3 2019 Portfolio in Review
As of Q3 2019, Simplex Trading held 8,410 positions worth $35.2B, down 4.1% from $36.6B the previous quarter. Its ten largest holdings account for 33% of the portfolio.
Simplex Trading's Q3 2019 filing shows 1,312 new, 3,129 increased, 2,596 reduced and 1,163 closed positions. Its largest new stake was SPDR Gold Trust: 131,281 shares worth $18.2M. The largest sale was Alphabet (Google) Class C, an estimated $60.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.49% of assets, up from 0.26% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2019 buy was SPDR Gold Trust: 131,281 shares worth $18.2M.
- Simplex Trading added most to Alibaba in Q3 2019, an estimated $50.3M increase.
- Simplex Trading's biggest Q3 2019 reduction was Alphabet (Google) Class C, cutting an estimated $60.3M.
- Simplex Trading fully exited iShares Russell 2000 ETF in Q3 2019, selling an estimated $36.4M.
- Simplex Trading's ten largest holdings make up 33% of its $35.2B portfolio in Q3 2019.
- Simplex Trading opened 1,312 new positions and closed 1,163 in Q3 2019.
- Simplex Trading's portfolio value fell 4.1% quarter-over-quarter to $35.2B.
Based on Simplex Trading's 13F filing for Q3 2019, filed 15 Oct 2019.