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 | |
|---|---|---|---|---|---|---|
201
InterDigital
IDCC
$6.8B
| $1.4M | 0.08% |
15,359
+8,895
| +138% | +$713K |
|
202
Amgen
AMGN
$199B
| $1.4M | 0.08% |
9,578
-6,836
| -42% | -$1.03M |
|
203
Franco-Nevada
FNV
$41.6B
| $1.4M | 0.08% |
+23,422
| New | +$1.43M |
|
204
CALL
United Rentals
URI
$64.2B
| $1.39M | 0.08% |
627
+71
| +13% | +$6.46K |
|
205
Philips
PHG
$25.8B
| $1.39M | 0.08% |
61,333
+17,571
| +40% | +$383K |
|
|
ACIA
206
DELISTED
Acacia Communications Inc
ACIA
| $1.38M | 0.08% |
+22,382
| New | +$1.71M |
|
207
Hilton Worldwide
HLT
$73.7B
| $1.38M | 0.08% |
+16,917
| New | +$1.24M |
|
208
CALL
Humana
HUM
$48.1B
| $1.38M | 0.08% |
1,182
+736
| +165% | +$140K |
|
209
CALL
PNC Financial Services
PNC
$100B
| $1.37M | 0.08% |
816
+435
| +114% | +$45.2K |
|
210
Cheniere Energy
CQP
$31.1B
| $1.35M | 0.08% |
47,017
+42,363
| +910% | +$1.2M |
|
|
BEAV
211
DELISTED
B/E Aerospace Inc
BEAV
| $1.35M | 0.08% |
22,489
+18,708
| +495% | +$1.08M |
|
212
Macy's
M
$6.38B
| $1.35M | 0.08% |
+37,694
| New | +$1.47M |
|
213
CALL
Mastercard
MA
$473B
| $1.34M | 0.08% |
2,766
+937
| +51% | +$97K |
|
|
AWH
214
DELISTED
Allied World Assurance Co Hld Lt
AWH
| $1.33M | 0.08% |
24,820
+19,763
| +391% | +$907K |
|
215
CVS Health
CVS
$140B
| $1.33M | 0.08% |
16,862
-8,990
| -35% | -$727K |
|
216
PUT
Regeneron Pharmaceuticals
REGN
$70.3B
| $1.33M | 0.08% |
1,029
+99
| +11% | +$37.6K |
|
217
CALL
Chevron
CVX
$383B
| $1.32M | 0.08% |
1,976
-1,578
| -44% | -$172K |
|
218
CALL
General Dynamics
GD
$101B
| $1.32M | 0.08% |
695
+173
| +33% | +$28.3K |
|
219
Lear
LEA
$7.19B
| $1.32M | 0.08% |
+9,970
| New | +$1.25M |
|
220
PUT
Twilio
TWLO
$28B
| $1.3M | 0.08% |
498
-62
| -11% | -$2.32K |
|
221
CALL
MetLife
MET
$60.2B
| $1.3M | 0.08% |
4,195
+379
| +10% | +$17.4K |
|
222
BioMarin Pharmaceuticals
BMRN
$11.6B
| $1.29M | 0.08% |
15,642
-2,489
| -14% | -$214K |
|
223
Huntington Ingalls Industries
HII
$10.9B
| $1.29M | 0.08% |
7,034
+5,108
| +265% | +$867K |
|
|
VIAB
224
DELISTED
Viacom Inc. Class B
VIAB
| $1.29M | 0.08% |
36,755
-51,353
| -58% | -$1.89M |
|
225
VanEck Oil Services ETF
OIH
$2.06B
| $1.29M | 0.08% |
+1,933
| New | +$1.2M |
|
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.