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 | |
|---|---|---|---|---|---|---|
|
KS
1726
DELISTED
KapStone Paper and Pack Corp.
KS
| $81K | ﹤0.01% |
3,676
-18,920
| -84% | -$384K |
|
|
BLUE
1727
PUT
DELISTED
bluebird bio
BLUE
| $80K | ﹤0.01% |
16
-10
| -38% | -$7.94K |
|
1728
FirstCash
FCFS
$8.55B
| $80K | ﹤0.01% |
1,709
-861
| -34% | -$40.5K |
|
1729
PUT
Golar LNG
GLNG
$4.95B
| $80K | ﹤0.01% |
660
+413
| +167% | +$9.61K |
|
1730
Rithm Capital
RITM
$5.09B
| $80K | ﹤0.01% |
+5,100
| New | +$75.3K |
|
1731
TE Connectivity
TEL
$58.8B
| $80K | ﹤0.01% |
1,159
-15,390
| -93% | -$1.02M |
|
|
RAI
1732
CALL
DELISTED
Reynolds American Inc
RAI
| $80K | ﹤0.01% |
228
-153
| -40% | -$8.12K |
|
|
UN
1733
PUT
DELISTED
Unilever NV New York Registry Shares
UN
| $80K | ﹤0.01% |
305
+31
| +11% | +$1.28K |
|
1734
Chefs' Warehouse
CHEF
$3.87B
| $79K | ﹤0.01% |
5,011
+4,955
| +8,848% | +$65.2K |
|
1735
CALL
Commercial Metals
CMC
$7.63B
| $79K | ﹤0.01% |
409
+293
| +253% | +$5.75K |
|
1736
CALL
Diageo
DEO
$46.2B
| $79K | ﹤0.01% |
229
+94
| +70% | +$9.89K |
|
1737
Genworth Financial
GNW
$3.8B
| $79K | ﹤0.01% |
+20,861
| New | +$91.9K |
|
1738
PUT
TAL Education Group
TAL
$5.71B
| $79K | ﹤0.01% |
2,124
-1,386
| -39% | -$16.9K |
|
1739
CALL
Teck Resources
TECK
$29.5B
| $79K | ﹤0.01% |
1,843
-177
| -9% | -$3.83K |
|
|
SWN
1740
CALL
DELISTED
Southwestern Energy Company
SWN
| $79K | ﹤0.01% |
2,061
-1,016
| -33% | -$11.6K |
|
1741
CALL
American Electric Power
AEP
$73.7B
| $78K | ﹤0.01% |
405
+227
| +128% | +$14K |
|
1742
CALL
Autoliv
ALV
$8.6B
| $78K | ﹤0.01% |
+167
| New | +$12.4K |
|
1743
PUT
Bread Financial
BFH
$4.21B
| $78K | ﹤0.01% |
86
-191
| -69% | -$33.2K |
|
1744
CALL
BioMarin Pharmaceuticals
BMRN
$11.5B
| $78K | ﹤0.01% |
166
-73
| -31% | -$6.28K |
|
|
1745
PUT
Diageo
DEO
$46.2B
| $78K | ﹤0.01% |
251
+85
| +51% | +$8.94K |
|
1746
CALL
The GEO Group
GEO
$4.13B
| $78K | ﹤0.01% |
495
+252
| +104% | +$4.91K |
|
1747
CALL
Hershey
HSY
$35.4B
| $78K | ﹤0.01% |
279
+74
| +36% | +$7.31K |
|
|
CS
1748
PUT
DELISTED
Credit Suisse Group
CS
| $78K | ﹤0.01% |
866
+681
| +368% | +$9.54K |
|
|
XLNX
1749
PUT
DELISTED
Xilinx Inc
XLNX
| $78K | ﹤0.01% |
849
+331
| +64% | +$17.8K |
|
|
IBKC
1750
CALL
DELISTED
IBERIABANK Corp
IBKC
| $78K | ﹤0.01% |
214
+6
| +3% | +$459 |
|
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.