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 |
Gilead Sciences
GILD
|
+$17.3M |
| 2 |
Apple
AAPL
|
+$15.2M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$14.9M |
| 4 |
Booking.com
BKNG
|
+$14.7M |
| 5 |
Wells Fargo
WFC
|
+$12.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$38.3M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
+$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
+$12.6M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
+$10.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.39% |
| 2 | Healthcare | 8.28% |
| 3 | Consumer Discretionary | 6.84% |
| 4 | Technology | 6.06% |
| 5 | Financials | 4.39% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1351
Strategy Inc
MSTR
$33.6B
| $129K | 0.01% |
+7,760
| New | +$134K |
|
1352
CALL
Opko Health
OPK
$914M
| $129K | 0.01% |
720
+99
| +16% | +$986 |
|
1353
CALL
Supernus Pharmaceuticals
SUPN
$2.69B
| $129K | 0.01% |
387
+333
| +617% | +$7.54K |
|
1354
CALL
Capital One
COF
$125B
| $128K | 0.01% |
859
+447
| +108% | +$30.7K |
|
1355
ProShares Short Russell2000
RWM
$121M
| $128K | 0.01% |
2,385
-2,338
| -50% | -$129K |
|
1356
CALL
Suncor Energy
SU
$78B
| $128K | 0.01% |
675
+100
| +17% | +$2.73K |
|
1357
PUT
Acadia Healthcare
ACHC
$3.24B
| $127K | 0.01% |
177
-55
| -24% | -$2.87K |
|
1358
PUT
Blackrock
BLK
$162B
| $127K | 0.01% |
331
+35
| +12% | +$12.7K |
|
1359
PUT
National Beverage
FIZZ
$2.87B
| $127K | 0.01% |
+862
| New | +$23.2K |
|
1360
ING
ING
$94.2B
| $127K | 0.01% |
+10,347
| New | +$120K |
|
1361
CALL
Principal Financial Group
PFG
$23.5B
| $127K | 0.01% |
312
+45
| +17% | +$2.1K |
|
1362
TD Synnex
SNX
$19.7B
| $127K | 0.01% |
+2,228
| New | +$115K |
|
|
TVRD
1363
CALL
Tvardi Therapeutics
TVRD
$23.3M
| $127K | 0.01% |
23
+20
| +667% | +$4.33K |
|
1364
CALL
Emerson Electric
EMR
$83B
| $126K | 0.01% |
389
-379
| -49% | -$20.3K |
|
1365
CALL
HealthEquity
HQY
$7.97B
| $126K | 0.01% |
184
+130
| +241% | +$4.12K |
|
|
XYZ
1366
CALL
Block Inc
XYZ
$46.3B
| $126K | 0.01% |
1,714
+853
| +99% | +$9.32K |
|
1367
Sprouts Farmers Market
SFM
$6.89B
| $125K | 0.01% |
+6,070
| New | +$135K |
|
|
BWLD
1368
PUT
DELISTED
Buffalo Wild Wings, Inc.
BWLD
| $125K | 0.01% |
125
+65
| +108% | +$10.1K |
|
|
LJPC
1369
CALL
DELISTED
La Jolla Pharmaceutical Company
LJPC
| $125K | 0.01% |
230
+222
| +2,775% | +$4.18K |
|
1370
CALL
Bath & Body Works
BBWI
$4.01B
| $124K | 0.01% |
580
-5
| -0.9% | -$295 |
|
1371
Iovance Biotherapeutics
IOVA
$2.27B
| $124K | 0.01% |
15,083
-57,257
| -79% | -$484K |
|
1372
Nokia
NOK
$51.9B
| $124K | 0.01% |
21,419
-48,559
| -69% | -$276K |
|
|
PGTI
1373
CALL
DELISTED
PGT, Inc.
PGTI
| $124K | 0.01% |
+1,061
| New | +$12.2K |
|
1374
CALL
Helmerich & Payne
HP
$3.56B
| $123K | 0.01% |
278
+117
| +73% | +$7.34K |
|
1375
Jones Lang LaSalle
JLL
$15.2B
| $123K | 0.01% |
+1,085
| New | +$121K |
|
Similar funds
Simplex Trading's Q3 2016 Portfolio in Review
As of Q3 2016, Simplex Trading held 7,235 positions worth $1.48B, down 1.4% from $1.5B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading withdrew a net $87.1M in Q3 2016, closing 1,479 positions and reducing 1,939 holdings. Its most notable exit was SPDR Gold Trust, an estimated $38.3M position sold in full.
By sector, the portfolio is most concentrated in Communication Services at 8.4% of assets, up from 6.6% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Booking.com worth $15.6M.
- Simplex Trading's largest Q3 2016 buy was Booking.com: 264,225 shares worth $15.6M.
- Simplex Trading added most to Gilead Sciences in Q3 2016, an estimated $17.3M increase.
- Simplex Trading's biggest Q3 2016 reduction was LinkedIn Corporation, cutting an estimated $15.2M.
- Simplex Trading fully exited SPDR Gold Trust in Q3 2016, selling an estimated $38.3M.
- Simplex Trading's ten largest holdings make up 18% of its $1.48B portfolio in Q3 2016.
- Simplex Trading opened 1,460 new positions and closed 1,479 in Q3 2016.
- Simplex Trading's portfolio value fell 1.4% quarter-over-quarter to $1.48B.
Based on Simplex Trading's 13F filing for Q3 2016, filed 7 Oct 2016.