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 | |
|---|---|---|---|---|---|---|
|
HAR
1226
CALL
DELISTED
Harman International Industries
HAR
| $156K | 0.01% |
641
+571
| +816% | +$55.1K |
|
1227
PUT
BHP
BHP
$213B
| $155K | 0.01% |
1,031
+117
| +13% | +$3.79K |
|
|
KSU
1228
CALL
DELISTED
Kansas City Southern
KSU
| $155K | 0.01% |
193
-28
| -13% | -$2.47K |
|
|
TWX
1229
PUT
DELISTED
Time Warner Inc
TWX
| $155K | 0.01% |
2,660
+2,257
| +560% | +$201K |
|
|
BBG
1230
PUT
DELISTED
Bill Barrett Corp
BBG
| $155K | 0.01% |
808
+155
| +24% | +$990 |
|
1231
CALL
Group 1 Automotive
GPI
$3.94B
| $154K | 0.01% |
134
+37
| +38% | +$2.54K |
|
|
CY
1232
PUT
DELISTED
Cypress Semiconductor
CY
| $154K | 0.01% |
1,011
+453
| +81% | +$4.97K |
|
|
FFNW
1233
DELISTED
First Financial Northwest, Inc
FFNW
| $153K | 0.01% |
+7,756
| New | +$127K |
|
1234
iShares MSCI Hong Kong ETF
EWH
$1.22B
| $152K | 0.01% |
+7,834
| New | +$164K |
|
1235
PUT
United States Oil Fund
USO
$2.45B
| $152K | 0.01% |
717
+324
| +82% | +$28.6K |
|
1236
CALL
Exelixis
EXEL
$13.9B
| $151K | 0.01% |
637
+101
| +19% | +$1.46K |
|
1237
CALL
Genworth Financial
GNW
$3.8B
| $151K | 0.01% |
2,112
-384
| -15% | -$1.69K |
|
1238
Huntington Bancshares
HBAN
$35.1B
| $151K | 0.01% |
11,475
-99,750
| -90% | -$1.16M |
|
1239
Paycom
PAYC
$6.78B
| $151K | 0.01% |
+3,337
| New | +$155K |
|
1240
ProShares UltraShort FTSE Europe
EPV
$11.6M
| $150K | 0.01% |
586
+56
| +11% | +$15.1K |
|
1241
PUT
Eaton
ETN
$157B
| $150K | 0.01% |
304
+112
| +58% | +$7.35K |
|
|
KITE
1242
PUT
DELISTED
Kite Pharma, Inc.
KITE
| $150K | 0.01% |
192
-304
| -61% | -$14.9K |
|
1243
CALL
Duke Energy
DUK
$102B
| $149K | 0.01% |
1,642
+228
| +16% | +$17.5K |
|
1244
IQVIA
IQV
$34.7B
| $149K | 0.01% |
+1,971
| New | +$151K |
|
1245
CALL
Lennar Class B
LEN.B
$20B
| $149K | 0.01% |
1,101
+694
| +171% | +$22.1K |
|
1246
AngloGold Ashanti
AU
$40.3B
| $148K | 0.01% |
14,159
+11,450
| +423% | +$139K |
|
1247
CALL
Cognizant
CTSH
$21.5B
| $148K | 0.01% |
1,159
+276
| +31% | +$14.8K |
|
|
1248
CALL
Eaton
ETN
$157B
| $148K | 0.01% |
838
+434
| +107% | +$28.5K |
|
1249
PUT
General Mills
GIS
$19.2B
| $148K | 0.01% |
2,210
+355
| +19% | +$22K |
|
|
XHR
1250
Xenia Hotels & Resorts
XHR
$1.98B
| $148K | 0.01% |
7,661
-2,705
| -26% | -$46.1K |
|
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.