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 | Communication Services | 14.27% |
| 2 | Technology | 10.3% |
| 3 | Healthcare | 7.76% |
| 4 | Consumer Discretionary | 6.32% |
| 5 | Financials | 5.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
151
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$233M
| – | – |
0
| – | – |
|
152
eBay
EBAY
$50.7B
| $1.38M | 0.12% |
54,380
+217
| +0.4% | +$5.41K |
|
|
153
PUT
Meta Platforms (Facebook)
META
$1.63T
| $1.37M | 0.12% |
4,461
-256
| -5% | -$20.9K |
|
|
VXX
154
CALL
DELISTED
iPath S&P 500 VIX Short-Term Futures ETN due 1/30/2019
VXX
| $1.37M | 0.11% |
334
-34
| -9% | -$11.1K |
|
|
PPO
155
DELISTED
POLYPORE INTERNATIONAL, INC
PPO
| $1.37M | 0.11% |
22,856
+21,317
| +1,385% | +$1.26M |
|
|
LNKD
156
CALL
DELISTED
LinkedIn Corporation
LNKD
| $1.37M | 0.11% |
1,562
+915
| +141% | +$204K |
|
|
LNKD
157
PUT
DELISTED
LinkedIn Corporation
LNKD
| $1.34M | 0.11% |
1,270
+339
| +36% | +$75.6K |
|
158
Zoetis
ZTS
$31.6B
| $1.34M | 0.11% |
27,803
+21,384
| +333% | +$1.02M |
|
159
PUT
Chipotle Mexican Grill
CMG
$42.5B
| $1.32M | 0.11% |
42,950
+5,950
| +16% | +$75.3K |
|
160
Valero Energy
VLO
$93.5B
| $1.31M | 0.11% |
20,869
+19,805
| +1,861% | +$1.17M |
|
|
MNK
161
DELISTED
MALLINCKRODT PUBLIC LIMITED COMPANY
MNK
| $1.3M | 0.11% |
11,017
+4,645
| +73% | +$573K |
|
162
YPF
YPF
$19.8B
| $1.29M | 0.11% |
+47,038
| New | +$1.37M |
|
|
SPLK
163
DELISTED
Splunk Inc
SPLK
| $1.28M | 0.11% |
18,430
+4,678
| +34% | +$315K |
|
|
CTXS
164
DELISTED
Citrix Systems Inc
CTXS
| $1.27M | 0.11% |
22,813
+22,562
| +8,989% | +$1.2M |
|
165
lululemon athletica
LULU
$13.2B
| $1.27M | 0.11% |
19,503
-5,829
| -23% | -$379K |
|
166
CALL
Goldman Sachs
GS
$320B
| $1.26M | 0.11% |
1,756
+954
| +119% | +$194K |
|
167
JD.com
JD
$41.1B
| $1.25M | 0.1% |
36,741
-15,720
| -30% | -$535K |
|
|
ENDP
168
DELISTED
Endo International plc
ENDP
| $1.25M | 0.1% |
+15,724
| New | +$1.36M |
|
169
Synchrony
SYF
$24.7B
| $1.25M | 0.1% |
37,849
+37,679
| +22,164% | +$1.2M |
|
170
CALL
Bausch Health
BHC
$1.75B
| $1.24M | 0.1% |
443
-437
| -50% | -$96.9K |
|
|
AERI
171
DELISTED
Aerie Pharmaceuticals
AERI
| $1.24M | 0.1% |
+70,424
| New | +$1.29M |
|
172
ResMed
RMD
$28.8B
| $1.24M | 0.1% |
+21,995
| New | +$1.39M |
|
|
HOT
173
DELISTED
STARWOOD HOTELS & RESORTS WORLDWIDE, INC.
HOT
| $1.24M | 0.1% |
+15,261
| New | +$1.28M |
|
174
Assured Guaranty
AGO
$3.78B
| $1.23M | 0.1% |
+51,178
| New | +$1.42M |
|
175
Green Dot
GDOT
$758M
| $1.22M | 0.1% |
63,913
+63,055
| +7,349% | +$1.02M |
|
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 $279M of net new capital in Q2 2015, opening 1,607 new positions and adding to 1,829 existing holdings. Its largest new stake was IBM: 85,948 shares worth $13.4M.
By sector, the portfolio is most concentrated in Communication Services at 14% of assets, up from 7.8% a quarter earlier, followed by Technology and Healthcare.
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.