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 | |
|---|---|---|---|---|---|---|
226
PUT
Bank of America
BAC
$432B
| $1.28M | 0.08% |
12,466
+4,507
| +57% | +$86.8K |
|
227
Kohl's
KSS
$2.15B
| $1.26M | 0.08% |
+25,635
| New | +$1.27M |
|
228
Travelers Companies
TRV
$82.1B
| $1.26M | 0.08% |
10,336
+7,009
| +211% | +$800K |
|
|
ICPT
229
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
| $1.26M | 0.08% |
+11,619
| New | +$1.38M |
|
230
CALL
UnitedHealth
UNH
$394B
| $1.25M | 0.07% |
1,133
-562
| -33% | -$83.9K |
|
231
VanEck Junior Gold Miners ETF
GDXJ
$7.23B
| $1.23M | 0.07% |
+39,091
| New | +$1.42M |
|
|
BOBE
232
DELISTED
Bob Evans Farms, Inc.
BOBE
| $1.23M | 0.07% |
23,188
+10,836
| +88% | +$488K |
|
|
CSOD
233
DELISTED
Cornerstone OnDemand, Inc.
CSOD
| $1.23M | 0.07% |
29,067
+18,723
| +181% | +$743K |
|
234
PUT
Amgen
AMGN
$198B
| $1.23M | 0.07% |
2,411
-540
| -18% | -$81.3K |
|
235
Conagra Brands
CAG
$7.07B
| $1.23M | 0.07% |
+30,991
| New | +$1.16M |
|
236
CALL
Qualcomm
QCOM
$185B
| $1.22M | 0.07% |
3,043
+434
| +17% | +$29.2K |
|
237
Ford
F
$57.3B
| $1.21M | 0.07% |
100,152
+67,937
| +211% | +$824K |
|
|
GPOR
238
DELISTED
Gulfport Energy Corp.
GPOR
| $1.21M | 0.07% |
55,933
+44,054
| +371% | +$1.13M |
|
239
Mid-America Apartment Communities
MAA
$15.3B
| $1.2M | 0.07% |
12,211
+2,106
| +21% | +$194K |
|
240
United Therapeutics
UTHR
$26.4B
| $1.19M | 0.07% |
+8,307
| New | +$1.06M |
|
|
PXD
241
CALL
DELISTED
Pioneer Natural Resource Co.
PXD
| $1.18M | 0.07% |
970
+54
| +6% | +$9.89K |
|
|
ALR
242
DELISTED
Alere Inc
ALR
| $1.18M | 0.07% |
30,200
+18,689
| +162% | +$756K |
|
|
243
PUT
Citigroup
C
$223B
| $1.17M | 0.07% |
11,147
+4,635
| +71% | +$250K |
|
244
CALL
Walt Disney
DIS
$167B
| $1.17M | 0.07% |
4,194
+208
| +5% | +$20.3K |
|
|
MBLY
245
PUT
DELISTED
Mobileye N.V.
MBLY
| $1.16M | 0.07% |
1,595
+341
| +27% | +$12.8K |
|
246
iShares MSCI United Kingdom ETF
EWU
$4.05B
| $1.16M | 0.07% |
+37,894
| New | +$1.15M |
|
247
CALL
iShares MSCI Australia ETF
EWA
$1.35B
| $1.16M | 0.07% |
9,313
+2,717
| +41% | +$55.9K |
|
248
Bank of Montreal
BMO
$126B
| $1.15M | 0.07% |
+16,019
| New | +$1.07M |
|
249
Digital Realty Trust
DLR
$66.5B
| $1.15M | 0.07% |
11,707
+6,824
| +140% | +$634K |
|
250
PUT
IBM
IBM
$194B
| $1.14M | 0.07% |
4,795
-2,354
| -33% | -$359K |
|
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.