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 | |
|---|---|---|---|---|---|---|
1476
PUT
Cleveland-Cliffs
CLF
$6.81B
| $107K | 0.01% |
1,065
-358
| -25% | -$2.34K |
|
1477
Entergy
ETR
$54.1B
| $107K | 0.01% |
2,808
-8,676
| -76% | -$345K |
|
1478
CALL
Kohl's
KSS
$2.03B
| $107K | 0.01% |
665
+58
| +10% | +$2.43K |
|
1479
Logitech
LOGI
$15.2B
| $107K | 0.01% |
+4,779
| New | +$95.9K |
|
1480
CALL
Stryker
SYK
$127B
| $107K | 0.01% |
191
-3
| -2% | -$350 |
|
1481
Take-Two Interactive
TTWO
$43B
| $107K | 0.01% |
+2,377
| New | +$100K |
|
|
MDRX
1482
DELISTED
Veradigm Inc. Common Stock
MDRX
| $107K | 0.01% |
+8,128
| New | +$109K |
|
1483
PUT
BioMarin Pharmaceuticals
BMRN
$11.5B
| $106K | 0.01% |
340
+80
| +31% | +$7.53K |
|
1484
PUT
Dillards
DDS
$8.87B
| $106K | 0.01% |
113
+9
| +9% | +$563 |
|
|
IMVP
1485
Invesco India ETF
IMVP
$122M
| $106K | 0.01% |
5,131
+2,896
| +130% | +$59.5K |
|
1486
CALL
Qorvo
QRVO
$7.63B
| $106K | 0.01% |
381
-140
| -27% | -$7.94K |
|
1487
CALL
Sony
SONY
$123B
| $106K | 0.01% |
1,545
+320
| +26% | +$2.05K |
|
|
JOY
1488
PUT
DELISTED
Joy Global Inc
JOY
| $106K | 0.01% |
166
-144
| -46% | -$3.82K |
|
|
TUBE
1489
DELISTED
TubeMogul, Inc.
TUBE
| $106K | 0.01% |
11,353
+6,780
| +148% | +$68.4K |
|
|
SHPG
1490
PUT
DELISTED
Shire pic
SHPG
| $106K | 0.01% |
259
-1,237
| -83% | -$241K |
|
1491
CF Industries
CF
$19.2B
| $105K | 0.01% |
4,348
-58,985
| -93% | -$1.44M |
|
1492
CALL
Eaton
ETN
$157B
| $105K | 0.01% |
404
+155
| +62% | +$10K |
|
1493
CALL
Inovio Pharmaceuticals
INO
$79.8M
| $105K | 0.01% |
61
-21
| -26% | -$2.32K |
|
|
SCHW
1494
CALL
Charles Schwab
SCHW
$177B
| $105K | 0.01% |
708
-369
| -34% | -$10.8K |
|
1495
CALL
Southern Company
SO
$110B
| $105K | 0.01% |
1,557
+816
| +110% | +$43K |
|
|
SODA
1496
PUT
DELISTED
SodaStream International Ltd
SODA
| $105K | 0.01% |
118
-24
| -17% | -$632 |
|
|
DNO
1497
DELISTED
United States Short Oil Fund
DNO
| $105K | 0.01% |
1,539
-3,439
| -69% | -$251K |
|
|
MYCC
1498
DELISTED
ClubCorp Holdings, Inc.
MYCC
| $105K | 0.01% |
+7,310
| New | +$107K |
|
|
CY
1499
PUT
DELISTED
Cypress Semiconductor
CY
| $105K | 0.01% |
558
+178
| +47% | +$2.03K |
|
1500
ProShares Ultra Dow30
DDM
$531M
| $104K | 0.01% |
8,820
+3,894
| +79% | +$46.6K |
|
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.