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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
Apple
AAPL
|
+$29.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$15.7M |
| 4 |
IBM
IBM
|
+$13.8M |
| 5 |
Baidu
BIDU
|
+$10.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$10.1M |
| 2 |
McDonald's
MCD
|
+$8.46M |
| 3 |
Ralph Lauren
RL
|
+$5.36M |
| 4 |
Intel
INTC
|
+$5.04M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
+$4.76M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 41.66% |
| 2 | Communication Services | 14.46% |
| 3 | Technology | 10.46% |
| 4 | Healthcare | 8.18% |
| 5 | Consumer Discretionary | 6.37% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1151
Crane NXT
CXT
$2.88B
| $110K | 0.01% |
+5,413
| New | +$115K |
|
1152
MetLife
MET
$62B
| $110K | 0.01% |
2,217
-4,787
| -68% | -$227K |
|
1153
PUT
Nike
NKE
$57B
| $110K | 0.01% |
2,176
+640
| +42% | +$32.8K |
|
1154
Annaly Capital Management
NLY
$17.2B
| $110K | 0.01% |
3,008
-578
| -16% | -$23.4K |
|
|
ALDR
1155
DELISTED
Alder Biopharmaceuticals
ALDR
| $110K | 0.01% |
+2,078
| New | +$75.6K |
|
|
CYNO
1156
DELISTED
Cynosure, Inc. Class A
CYNO
| $110K | 0.01% |
+2,860
| New | +$101K |
|
1157
CALL
Coca-Cola
KO
$379B
| $109K | 0.01% |
803
-1,254
| -61% | -$51K |
|
1158
Franklin Templeton
BEN
$17.6B
| $108K | 0.01% |
2,205
+895
| +68% | +$45.9K |
|
1159
Celldex Therapeutics
CLDX
$3.12B
| $108K | 0.01% |
286
-1,133
| -80% | -$450K |
|
1160
IPG Photonics
IPGP
$3.32B
| $108K | 0.01% |
1,274
-568
| -31% | -$53.4K |
|
1161
Schwab U.S Small- Cap ETF
SCHA
$22.9B
| $108K | 0.01% |
7,568
+3,320
| +78% | +$48.1K |
|
1162
Waste Management
WM
$87.5B
| $108K | 0.01% |
+2,351
| New | +$118K |
|
|
WIRE
1163
DELISTED
Encore Wire Corp
WIRE
| $108K | 0.01% |
2,461
-4,300
| -64% | -$187K |
|
|
ARIA
1164
DELISTED
Ariad Pharmaceuticals Inc
ARIA
| $108K | 0.01% |
13,172
+11,282
| +597% | +$99.8K |
|
|
TUMI
1165
DELISTED
TUMI HLDGS INC COM
TUMI
| $108K | 0.01% |
+5,287
| New | +$115K |
|
1166
Azenta
AZTA
$1.37B
| $107K | 0.01% |
+9,388
| New | +$108K |
|
|
JKS
1167
JinkoSolar
JKS
$627M
| $107K | 0.01% |
3,643
+2,493
| +217% | +$72.4K |
|
|
FRGI
1168
DELISTED
Fiesta Restaurant Group, Inc.
FRGI
| $107K | 0.01% |
2,153
+1,424
| +195% | +$75.2K |
|
|
ESRX
1169
PUT
DELISTED
Express Scripts Holding Company
ESRX
| $107K | 0.01% |
604
-92
| -13% | -$8.04K |
|
|
ADVS
1170
DELISTED
Advent Software Inc
ADVS
| $107K | 0.01% |
2,430
-3,598
| -60% | -$157K |
|
1171
PUT
Alcoa
AA
$13.2B
| $106K | 0.01% |
301
+244
| +428% | +$7.56K |
|
1172
PUT
Nokia
NOK
$56.2B
| $106K | 0.01% |
+744
| New | +$5.42K |
|
1173
CALL
United States Oil Fund
USO
$1.61B
| $106K | 0.01% |
98
-169
| -63% | -$26.8K |
|
|
MWE
1174
DELISTED
MARKWEST ENERGY PARTNERS, LP
MWE
| $106K | 0.01% |
1,896
-3,729
| -66% | -$241K |
|
1175
Assurant
AIZ
$14.1B
| $105K | 0.01% |
1,575
+1,483
| +1,612% | +$95.6K |
|
Similar funds
Simplex Trading's Q2 2015 Portfolio in Review
As of Q2 2015, Simplex Trading held 6,639 positions worth $1.19B, up 39% from $860M the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $285M of net new capital in Q2 2015, opening 1,607 new positions and adding to 1,827 existing holdings. Its largest new stake was IBM: 85,948 shares worth $13.4M.
By sector, the portfolio is most concentrated in Miscellaneous at 42% of assets, down from 50% a quarter earlier, followed by Communication Services and Technology.
On the sell side, the largest reduction was Intel, an estimated $5.04M trimmed.
- Simplex Trading's largest Q2 2015 buy was IBM: 85,948 shares worth $13.4M.
- Simplex Trading added most to Alphabet (Google) Class C in Q2 2015, an estimated $54.6M increase.
- Simplex Trading's biggest Q2 2015 reduction was Intel, cutting an estimated $5.04M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2015, selling an estimated $10.1M.
- Simplex Trading's ten largest holdings make up 20% of its $1.19B portfolio in Q2 2015.
- Simplex Trading opened 1,607 new positions and closed 1,438 in Q2 2015.
- Simplex Trading's portfolio value rose 39% quarter-over-quarter to $1.19B.
Based on Simplex Trading's 13F filing for Q2 2015, filed 8 Jul 2015.