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 | |
|---|---|---|---|---|---|---|
751
CALL
Ulta Beauty
ULTA
$20.6B
| $333K | 0.02% |
242
+20
| +9% | +$5K |
|
|
APC
752
PUT
DELISTED
Anadarko Petroleum
APC
| $333K | 0.02% |
2,416
+789
| +48% | +$51.3K |
|
753
Scotiabank
BNS
$105B
| $332K | 0.02% |
+5,964
| New | +$325K |
|
754
CALL
PayPal
PYPL
$49.1B
| $332K | 0.02% |
2,742
-14
| -0.5% | -$563 |
|
755
DNOW Inc
DNOW
$2.59B
| $331K | 0.02% |
+16,175
| New | +$343K |
|
756
CALL
Electronic Arts
EA
$52.4B
| $331K | 0.02% |
1,096
-159
| -13% | -$12.8K |
|
|
EXAS
757
PUT
DELISTED
Exact Sciences
EXAS
| $331K | 0.02% |
896
+179
| +25% | +$2.89K |
|
758
CALL
Prudential Financial
PRU
$40.8B
| $331K | 0.02% |
581
-166
| -22% | -$15.7K |
|
759
PUT
RH
RH
$3.13B
| $330K | 0.02% |
481
-255
| -35% | -$8.24K |
|
760
PUT
Vertex Pharmaceuticals
VRTX
$120B
| $329K | 0.02% |
380
+1
| +0.3% | +$81 |
|
761
PUT
AT&T
T
$159B
| $327K | 0.02% |
10,934
+2,215
| +25% | +$65.4K |
|
762
Deckers Outdoor
DECK
$13.6B
| $326K | 0.02% |
35,418
-17,562
| -33% | -$169K |
|
|
ETP
763
PUT
DELISTED
Energy Transfer Partners L.p.
ETP
| $326K | 0.02% |
1,338
+487
| +57% | +$17.4K |
|
764
CALL
Chord Energy
CHRD
$7.85B
| $325K | 0.02% |
778
-533
| -41% | -$6.9K |
|
765
CALL
JetBlue
JBLU
$1.81B
| $325K | 0.02% |
1,283
+818
| +176% | +$16.2K |
|
766
PUT
PepsiCo
PEP
$184B
| $325K | 0.02% |
3,174
+1,791
| +130% | +$188K |
|
|
BIG
767
DELISTED
Big Lots, Inc.
BIG
| $325K | 0.02% |
+6,477
| New | +$318K |
|
768
CALL
Phillips 66
PSX
$83.7B
| $324K | 0.02% |
646
-620
| -49% | -$51.5K |
|
769
Hancock Whitney
HWC
$6.06B
| $322K | 0.02% |
+7,494
| New | +$285K |
|
770
PUT
Capri Holdings
CPRI
$1.76B
| $321K | 0.02% |
968
+200
| +26% | +$9.5K |
|
|
GNC
771
DELISTED
GNC Holdings, Inc.
GNC
| $321K | 0.02% |
29,125
+3,995
| +16% | +$62.5K |
|
|
P
772
Everpure Inc
P
$24.9B
| $319K | 0.02% |
28,284
-8,749
| -24% | -$113K |
|
773
CALL
Trip.com Group
TCOM
$27B
| $319K | 0.02% |
2,048
-261
| -11% | -$11.4K |
|
774
PUT
Union Pacific
UNP
$181B
| $318K | 0.02% |
2,183
+279
| +15% | +$27.4K |
|
|
LGF.B
775
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
| $318K | 0.02% |
+12,967
| New | +$331K |
|
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.