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 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$49.8M |
| 2 |
Apple
AAPL
|
+$24.5M |
| 3 |
Citigroup
C
|
+$23.5M |
| 4 |
Amazon
AMZN
|
+$22.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
+$17.4M |
| 2 |
Wells Fargo
WFC
|
+$13.5M |
| 3 |
MDVN
MEDIVATION, INC.
MDVN
|
+$8.62M |
| 4 |
Goldman Sachs
GS
|
+$8.5M |
| 5 |
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
|
+$8.15M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.76% |
| 2 | Technology | 7.19% |
| 3 | Healthcare | 6.91% |
| 4 | Consumer Discretionary | 6.53% |
| 5 | Financials | 5.37% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
801
PUT
Petrobras
PBR
$122B
| $299K | 0.02% |
2,638
+642
| +32% | +$6.86K |
|
802
CALL
BHP
BHP
$212B
| $298K | 0.02% |
1,676
+107
| +7% | +$3.46K |
|
|
DFS
803
CALL
DELISTED
Discover Financial Services
DFS
| $298K | 0.02% |
1,025
+475
| +86% | +$30.2K |
|
804
PUT
JPMorgan Chase
JPM
$930B
| $298K | 0.02% |
6,187
+3,531
| +133% | +$269K |
|
805
Quest Diagnostics
DGX
$25.2B
| $297K | 0.02% |
+3,233
| New | +$279K |
|
|
AMRS
806
PUT
DELISTED
Amyris Inc.
AMRS
| $297K | 0.02% |
+69
| New | +$846 |
|
807
CALL
United States Oil Fund
USO
$2.5B
| $296K | 0.02% |
644
+127
| +25% | +$11.2K |
|
808
CALL
F5
FFIV
$21.9B
| $295K | 0.02% |
154
-78
| -34% | -$10.6K |
|
809
PUT
BP
BP
$113B
| $294K | 0.02% |
1,912
-190
| -9% | -$5.72K |
|
810
PUT
Colgate-Palmolive
CL
$72.1B
| $294K | 0.02% |
1,155
-1,234
| -52% | -$84.6K |
|
|
JWN
811
PUT
DELISTED
Nordstrom
JWN
| $294K | 0.02% |
412
+235
| +133% | +$12.8K |
|
|
STON
812
DELISTED
StoneMor Inc.
STON
| $294K | 0.02% |
+33,057
| New | +$464K |
|
813
PUT
Invesco CurrencyShares British Pound Sterling Trust
FXB
$76.9M
| $293K | 0.02% |
617
-142
| -19% | -$17.2K |
|
814
PUT
iShares Silver Trust
SLV
$27.8B
| $293K | 0.02% |
1,307
-493
| -27% | -$8.01K |
|
|
VMW
815
PUT
DELISTED
VMware, Inc
VMW
| $293K | 0.02% |
905
-128
| -12% | -$9.94K |
|
|
SPWR
816
PUT
DELISTED
SunPower Corporation Common Stock
SPWR
| $292K | 0.02% |
759
-270
| -26% | -$1.32K |
|
817
CALL
Capri Holdings
CPRI
$1.78B
| $291K | 0.02% |
419
-287
| -41% | -$13.6K |
|
|
WFT
818
DELISTED
Weatherford International plc
WFT
| $291K | 0.02% |
+58,465
| New | +$306K |
|
|
P
819
CALL
DELISTED
Pandora Media Inc
P
| $291K | 0.02% |
3,812
+1,230
| +48% | +$15.2K |
|
820
CALL
Abbott
ABT
$175B
| $289K | 0.02% |
2,045
-532
| -21% | -$21.1K |
|
821
Alnylam Pharmaceuticals
ALNY
$35.9B
| $289K | 0.02% |
7,731
-1,025
| -12% | -$42.9K |
|
822
International Flavors & Fragrances
IFF
$18.8B
| $289K | 0.02% |
+2,454
| New | +$308K |
|
823
PUT
Morgan Stanley
MS
$338B
| $289K | 0.02% |
4,079
+1,218
| +43% | +$46.1K |
|
824
CACI
CACI
$10.6B
| $288K | 0.02% |
2,323
-172
| -7% | -$19.9K |
|
825
Direxion Daily FTSE China Bear 3X ETF
YANG
$87.6M
| $288K | 0.02% |
85
+20
| +31% | +$61.3K |
|
Similar funds
Simplex Trading's Q4 2016 Portfolio in Review
As of Q4 2016, Simplex Trading held 7,301 positions worth $1.67B, up 13% from $1.48B the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $181M of net new capital in Q4 2016, opening 1,543 new positions and adding to 2,137 existing holdings. Its largest new stake was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
By sector, the portfolio is most concentrated in Communication Services at 8.8% of assets, up from 8.4% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Goldman Sachs, an estimated $8.5M trimmed.
- Simplex Trading's largest Q4 2016 buy was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
- Simplex Trading added most to Apple in Q4 2016, an estimated $24.5M increase.
- Simplex Trading's biggest Q4 2016 reduction was Goldman Sachs, cutting an estimated $8.5M.
- Simplex Trading fully exited LinkedIn Corporation in Q4 2016, selling an estimated $17.4M.
- Simplex Trading's ten largest holdings make up 20% of its $1.67B portfolio in Q4 2016.
- Simplex Trading opened 1,543 new positions and closed 1,480 in Q4 2016.
- Simplex Trading's portfolio value rose 13% quarter-over-quarter to $1.67B.
Based on Simplex Trading's 13F filing for Q4 2016, filed 11 Jan 2017.