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 | |
|---|---|---|---|---|---|---|
|
CHMT
2651
DELISTED
Chemtura Corporation
CHMT
| $28K | ﹤0.01% |
+865
| New | +$25K |
|
|
GK
2652
PUT
DELISTED
G&K Services Inc
GK
| $28K | ﹤0.01% |
+63
| New | +$5.57K |
|
|
FEIC
2653
CALL
DELISTED
FEI COMPANY
FEIC
| $28K | ﹤0.01% |
98
+21
| +27% | +$2.24K |
|
|
NTP
2654
PUT
DELISTED
Nam Tai Property Inc.
NTP
| $28K | ﹤0.01% |
+187
| New | +$1.29K |
|
|
PSXP
2655
PUT
DELISTED
PHILLIPS 66 PARTNERS LP
PSXP
| $28K | ﹤0.01% |
141
+99
| +236% | +$5.02K |
|
|
BCR
2656
DELISTED
CR Bard Inc.
BCR
| $28K | ﹤0.01% |
+127
| New | +$28.6K |
|
|
CIT
2657
CALL
DELISTED
CIT Group Inc.
CIT
| $28K | ﹤0.01% |
159
-158
| -50% | -$5.52K |
|
2658
CALL
Automatic Data Processing
ADP
$100B
| $27K | ﹤0.01% |
458
+9
| +2% | +$815 |
|
2659
Build-A-Bear
BBW
$423M
| $27K | ﹤0.01% |
+2,693
| New | +$32.9K |
|
2660
CALL
Boyd Gaming
BYD
$6.47B
| $27K | ﹤0.01% |
452
+352
| +352% | +$6.76K |
|
2661
CALL
Cullen/Frost Bankers
CFR
$10.3B
| $27K | ﹤0.01% |
104
-11
| -10% | -$762 |
|
2662
CALL
C.H. Robinson
CHRW
$22B
| $27K | ﹤0.01% |
326
-459
| -58% | -$32.2K |
|
2663
PUT
F5
FFIV
$22.1B
| $27K | ﹤0.01% |
181
-19
| -10% | -$2.31K |
|
|
IRBT
2664
CALL
DELISTED
iRobot
IRBT
| $27K | ﹤0.01% |
86
+51
| +146% | +$2K |
|
2665
PUT
Kohl's
KSS
$2.03B
| $27K | ﹤0.01% |
116
-774
| -87% | -$32.4K |
|
2666
PUT
Lennar Class B
LEN.B
$20B
| $27K | ﹤0.01% |
155
-310
| -67% | -$10.8K |
|
|
NGD
2667
DELISTED
New Gold Inc
NGD
| $27K | ﹤0.01% |
+6,385
| New | +$31.8K |
|
2668
Annaly Capital Management
NLY
$16.9B
| $27K | ﹤0.01% |
+661
| New | +$28.6K |
|
2669
PUT
Northrop Grumman
NOC
$77B
| $27K | ﹤0.01% |
112
+35
| +45% | +$7.58K |
|
2670
NWPX Infrastructure Inc
NWPX
$1.25B
| $27K | ﹤0.01% |
2,306
+1,959
| +565% | +$22.6K |
|
2671
PUT
PNC Financial Services
PNC
$100B
| $27K | ﹤0.01% |
538
+405
| +305% | +$34.8K |
|
2672
PUT
uniQure
QURE
$2.68B
| $27K | ﹤0.01% |
24
-11
| -31% | -$87 |
|
2673
PUT
Suncor Energy
SU
$77.7B
| $27K | ﹤0.01% |
281
-664
| -70% | -$18.1K |
|
2674
PUT
Sunoco
SUN
$14.2B
| $27K | ﹤0.01% |
209
+25
| +14% | +$751 |
|
2675
PUT
Terex
TEX
$7.98B
| $27K | ﹤0.01% |
209
-30
| -13% | -$699 |
|
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.