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 | |
|---|---|---|---|---|---|---|
701
PUT
First Solar
FSLR
$22.4B
| $341K | 0.02% |
1,116
+761
| +214% | +$31.5K |
|
|
ISEE
702
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $341K | 0.02% |
7,398
-2,816
| -28% | -$159K |
|
|
OIL
703
DELISTED
Barclays Bank PLC iPath Exchange Traded Notes Linked to Goldman Sachs Crude Oil Total Return In
OIL
| $341K | 0.02% |
+58,509
| New | +$329K |
|
704
PUT
JPMorgan Chase
JPM
$926B
| $340K | 0.02% |
2,656
-4,553
| -63% | -$297K |
|
|
AYR
705
DELISTED
Aircastle Ltd
AYR
| $339K | 0.02% |
+17,090
| New | +$359K |
|
706
PUT
Intel
INTC
$516B
| $338K | 0.02% |
4,927
+1,772
| +56% | +$62.8K |
|
707
Johnson Controls International
JCI
$86.9B
| $338K | 0.02% |
+7,281
| New | +$338K |
|
708
Clorox
CLX
$11.6B
| $337K | 0.02% |
2,699
-2,913
| -52% | -$382K |
|
709
Jacobs Solutions
J
$15.4B
| $337K | 0.02% |
+7,899
| New | +$343K |
|
710
CALL
BP
BP
$112B
| $335K | 0.02% |
2,333
-2,754
| -54% | -$79.9K |
|
|
GPOR
711
DELISTED
Gulfport Energy Corp.
GPOR
| $335K | 0.02% |
11,879
+11,819
| +19,698% | +$337K |
|
712
Voya Financial
VOYA
$8.93B
| $334K | 0.02% |
11,612
-8,144
| -41% | -$223K |
|
713
CALL
Rio Tinto
RIO
$150B
| $333K | 0.02% |
902
+621
| +221% | +$19.8K |
|
714
PUT
RH
RH
$3.31B
| $332K | 0.02% |
736
+179
| +32% | +$5.7K |
|
|
CTRA
715
DELISTED
Coterra Energy
CTRA
| $331K | 0.02% |
12,833
-16,480
| -56% | -$412K |
|
716
Adtran
ADTN
$846M
| $330K | 0.02% |
17,243
+16,945
| +5,686% | +$312K |
|
717
PUT
Morgan Stanley
MS
$343B
| $330K | 0.02% |
2,861
-1,012
| -26% | -$30.2K |
|
718
CALL
Cleveland-Cliffs
CLF
$5.39B
| $329K | 0.02% |
1,980
-1,124
| -36% | -$7.33K |
|
719
Five Below
FIVE
$11.3B
| $329K | 0.02% |
+8,181
| New | +$379K |
|
720
PUT
UnitedHealth
UNH
$392B
| $329K | 0.02% |
2,260
+183
| +9% | +$25.6K |
|
|
ADPT
721
DELISTED
Adeptus Health Inc
ADPT
| $329K | 0.02% |
7,658
+7,473
| +4,039% | +$337K |
|
|
UWC
722
PUT
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $329K | 0.02% |
746
-149
| -17% | -$65.7K |
|
723
CALL
PepsiCo
PEP
$185B
| $328K | 0.02% |
1,868
+555
| +42% | +$59.8K |
|
724
PUT
Signet Jewelers
SIG
$3.52B
| $327K | 0.02% |
697
-67
| -9% | -$5.67K |
|
|
SWN
725
CALL
DELISTED
Southwestern Energy Company
SWN
| $327K | 0.02% |
3,077
-105
| -3% | -$1.46K |
|
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.